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  • 11

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    vol.19-3

  • 12

    1980199913

    19

    1980199951

    6817

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    20

    1980

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    1980

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    1999

    1980

    1999

    1999

    8.5

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    11.5

    7.9

    5.7

    21.1

    22.4

    22.3

    31.7

    37.3

    37.1

    17.4

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    30.4

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    13.3

    14.4

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    22.0

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    22.2

    10.5

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    6.9

    10.8

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    15.6

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    12.2

    40.9

    36.6

    39.0

    19.6

    21.3

    22.8

    13.0

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    vol.19-3

  • 13

    19991980

    594910

    2540

    1523

    20

    20

    1980

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    1999

    1980

    1999

    1999

    1980

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    1999

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    8.3

    6.7

    5.7

    1.5

    1.4

    2.0

    1.2

    0.9

    0.7

    11.6

    11.1

    12.5

    26.3

    25.9

    27.0

    51.1

    54.0

    52.1

    11.6

    6.3

    5.6

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    0.5

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    0.9

    17.5

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    14.3

    22.9

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    21.3

    21.3

    30.7

    25.9

    30.3

    4.6

    3.6

    2.9

    3.3

    3.0

    4.7

    22.9

    21.0

    20.7

    23.7

    29.0

    26.5

    51.4

    68.1

    68.2

    32.7

    31.5

    31.9

    20.7

    22.2

    25.6

    15.2

    17.7

    16.3

    4.7

    3.5

    2.4

    3.8

    4.1

    3.1

    vol.19-3

  • 14

    19801999

    37

    44

    34

    42

    39

    4910

    1980

    1999

    1999

    1980

    1999

    1999

    1980

    1999

    1999

    4.5

    4.4

    1.8

    3.8

    2.6

    1.4

    20.6

    19.0

    18.9

    13.8

    10.3

    10.0

    9.2

    8.6

    7.1

    45.4

    49.1

    46.1

    17.5

    16.7

    20.7

    19.6

    18.6

    22.9

    16.1

    14.5

    13.0

    33.9

    40.4

    41.9

    8.8

    7.4

    6.6

    6.8

    8.4

    9.6

    9.3

    6.1

    4.5

    8.6

    8.7

    8.3

    38.6

    46.2

    48.7

    4.4

    4.6

    3.8

    11.5

    9.9

    9.4

    27.6

    24.5

    25.3

    vol.19-3

  • 1999

    82

    8084

    848379

    20

    15

    20

    8682

    1980

    8487

    8887

    82

    1999

    20

    1980

    1999

    85.5

    81.8

    7.4

    7.7

    3.1

    4.2

    1.9

    2.3

    1.3

    2.2

    0.8

    1.8

    19801999

    vol.19-3

  • 16

    198075199079

    191420

    198065

    199958

    1980

    1999

    1980

    1999

    1980

    1999

    18.6

    14.4

    5.7

    4.5

    5.3

    5.5

    41.7

    40.9

    19.6

    16.9

    12.3

    18.7

    28.7

    36.3

    44.8

    47.2

    37.9

    40.1

    11.0

    8.4

    29.9

    31.4

    44.5

    35.7

    19801999

    vol.19-3

  • 17

    198038199935

    2228

    1980451999

    36

    1980

    51199940

    3831

    4740

    443443

    34

    1980

    1999

    1999

    1980

    1999

    1999

    1980

    1999

    1999

    1980

    1999

    1999

    5.5

    5.4

    3.4

    6.5

    4.7

    3.4

    27.9

    29.3

    24.3

    22.1

    18.1

    17.4

    18.3

    16.6

    13.0

    46.1

    54.4

    56.8

    16.8

    12.9

    15.0

    6.8

    6.0

    8.4

    20.5

    21.7

    24.5

    23.4

    26.1

    28.2

    4.3

    2.7

    3.8

    1.8

    2.1

    1.8

    20.8

    17.5

    14.8

    21.4

    22.5

    22.1

    26.7

    36.8

    38.8

    4.0

    2.6

    3.8

    2.3

    2.2

    3.1

    24.8

    18.4

    17.4

    19.6

    18.3

    16.8

    18.6

    22.6

    24.4

    25.7

    29.0

    32.6

    6.3

    5.0

    4.7

    3.9

    3.7

    3.6

    25.9

    21.4

    17.9

    vol.19-3

  • 18

    1980

    1999

    19801999

    19801999

    18

    13

    465711

    198019992517

    21

    15

    2739

    2618

    19801999

    5042

    20

    vol.19-3

  • 19

    20

    20

    19801999

    12

    198077199970

    198076

    199969

    19801999

    vol.19-3

  • 20

    1980

    1999

    1980

    1999

    1980

    1999

    1980

    1999

    1980

    1999

    1980

    1999

    1980

    1999

    1980

    1980

    1999

    1980

    1999

    1980

    1999

    1999

    1980

    1999

    77.3

    69.9

    76.0

    69.0

    76.5

    59.9

    68.0

    59.4

    63.7

    56.9

    64.8

    48.8

    66.0

    48.7

    52.7

    44.1

    50.1

    35.3

    40.8

    32.5

    46.9

    31.2

    29.6

    20.0 39.4 28.7 11.9

    35.7 27.9 6.8

    30.2 24.8 13.8

    27.1 17.9 8.1

    33.6 24.1 9.8

    32.1 18.8 8.3

    39.6 18.5 6.6

    31.5 15.9 2.5

    31.4 15.4 9.1

    28.0 13.7 5.6

    32.2 14.5 4.6

    23.6 8.0 2.4

    34.6 10.9 5.7

    23.7 8.3 3.2

    24.7 9.4 9.0

    19.0 9.2 8.1

    31.5 7.3 1.8

    21.4 8.2 2.4

    29.8 8.0 2.3

    18.4 4.4 0.7

    22.5 6.5 2.0

    17.3 5.1 1.6

    19.9 6.2 4.0

    15.8 5.2 1.7

    vol.19-3

  • 21

    1999

    1980

    19801999

    1980

    1999

    1980

    1999

    1980

    1999

    1980

    1999

    1980

    1999

    1980

    1999

    1980

    1999

    1980

    1999

    4.2

    11.5

    8.1

    13.5

    32.0

    37.1

    52.4

    62.6

    5.0

    8.6

    6.8 54.8

    9.0

    5.3

    12.4

    5.7

    13.6 52.9 33.5

    59.8 34.5

    53.2 34.4

    62.7 32.0

    47.8 43.2

    38.4

    56.6 34.8

    57.2 37.8

    28.3 9.1

    35.9 11.7

    48.3 14.6

    57.4 10.6

    57.1 29.4

    60.6 31.3

    46.3 42.2

    39.6 56.2

    vol.19-3

  • 22

    1980

    1999

    19801999

    1999

    1980

    1999

    1980

    1999

    1980

    1980

    1999

    1980

    1999

    1980

    1999

    50 100

    12

    0

    27.1

    15.4

    42.2

    17.341.7

    55.6 73.8

    48.6

    15.420.9

    16.1

    56.9

    55.1

    43.8

    52.546.7

    41.9

    54.6

    47.4

    20.118.6

    24.223.8

    30.224.8

    22.620.7

    12.2

    6.7

    5.8

    7.7

    8.3

    vol.19-3

  • 23

    60 40 20 0 0 20 40 60

    3.1 12.5

    10.1

    12.6

    11.0

    11.9

    17.2

    5.5

    9.2

    7.5

    3.9

    7.5

    28.4

    34.5

    32.1

    46.7

    54.4

    54.4

    36.6

    36.3

    38.4

    56.6

    65.8

    65.0

    12.0

    5.6

    8.4

    12.8

    6.4

    7.9

    4.0

    5.0

    5.9

    6.7

    7.3

    6.5

    14.1

    11.4

    11.8

    17.9

    11.2

    12.0

    3.6

    7.2

    4.7

    5.2

    7.4

    4.4

    19991980

    vol.19-3

  • 24

    20

    11

    72

    55

    1980

    20

    vol.19-3

  • 25

    200 40 60 80 100

    37.5

    14.1

    21.9

    13.6

    11.7

    14.1

    8.5

    5.9

    5.2

    6.4 10.3

    3.9

    9.7 14.9

    11.0 18.2 29.2

    23.9 29.8

    23.2 31.7

    19.4 33.5

    22.4 34.1

    27.8 41.4

    24.5 46.4

    40.4 54.5

    34.3 71.8

    1

    q

    17w

    17e

    16r

    16

    vol.19-3

  • 19801999198019991980199919801999 19801999198019991980199919801999198019991980199919801999

    23

    12.216.627.643.6

    12.315.934.337.5

    10.624.542.322.6

    13.931.640.414.1

    17.438.030.414.2

    21.337.327.813.6

    25.622.728.623.1

    29.723.924.521.9

    22.126.629.222.1

    35.330.622.411.7

    23.7

    28.430.617.3

    35.932.423.28.5

    52.222.513.511.8

    41.425.119.414.1

    42.327.923.95.9

    33.020.226.020.8

    26.928.429.215.5

    45.225.618.211.0

    39.337.616.26.9

    54.930.29.75.2

    68.625.14.2

    2.1

    61.528.26.43.9

    26

    vol.19-3

  • 27

    1980 1999 1980 1999

    67.3

    82.0

    58.0

    64.1

    42.4

    29.1

    15.6

    70.8

    40.3

    28.8

    8.3

    70.0

    62.1

    54.0

    56.1

    28.0

    20.4

    23.5

    38.9

    23.4

    19.4

    12.0

    74.8

    48.9

    32.0

    40.1

    59.6

    65.4

    34.4

    24.4

    48.8

    17.8

    4.6

    73.9

    46.0

    27.4

    35.4

    41.1

    44.4

    45.0

    19.6

    35.7

    9.7

    8.3

    vol.19-3

  • 20

    1980

    19801999

    20

    6545

    28

    vol.19-3

  • 29

    1980

    1999

    1980

    1999

    1980

    1999

    1980

    1999

    1980

    1999

    1980

    1999

    1980

    1999

    1980

    1999

    1980

    1999

    1980

    1999

    1980

    1999

    456

    42.4

    26.3

    50.0

    31.0

    48.0

    31.7

    64.2

    62.4

    72.8

    72.6

    76.4

    79.4

    39.0

    37.2

    58.2

    44.3

    57.9

    56.4

    41.1

    35.8

    47.4

    40.8

    45.4

    46.9

    41.4

    26.8

    50.7

    30.5

    51.6

    37.3

    41.8

    29.9

    47.9

    27.4

    44.4

    30.4

    20.2

    28.4

    29.0

    32.8

    26.7

    38.9

    21.6

    15.2

    23.1

    14.3

    24.7

    15.3

    60.8

    37.2

    66.9

    60.0

    67.3

    64.9

    40.5

    26.6

    51.8

    29.9

    61.5

    44.8

    6.4

    14.6

    8.5

    8.7

    4.5

    8.0

    vol.19-3

  • 30

    42

    1980

    20

    15

    20

    1980

    1999

    1980

    1999

    1980

    1999

    1980

    1999

    1980

    1999

    35.0

    34.9

    41.2

    36.6

    23.8

    28.5

    14.9

    13.7

    51.3

    46.0

    33.8

    40.3

    26.2

    24.0

    42.0

    37.5

    31.8

    38.5

    76.2

    67.5

    20.1

    21.4

    3.7

    11.1

    27.8

    21.9

    45.4

    36.2

    26.8

    41.9

    vol.19-3

  • 31

    1980

    1980

    7158

    4030

    1980

    1999

    1980

    1999

    1980

    1999

    1980

    1999

    1980

    1999

    18.1

    22.6

    10.1

    9.6

    19.3

    20.0

    70.5

    58.0

    16.9

    14.4

    48.3

    40.6

    47.7

    40.0

    42.0

    36.1

    24.0

    26.6

    47.5

    35.5

    33.6

    36.8

    42.2

    50.4

    38.7

    43.9

    5.5

    15.4

    35.6

    50.1

    53.4

    48.7

    20.1

    18.5

    33.6

    28.6

    82.4

    78.5

    39.6

    30.1

    33.5

    32.3

    55.2

    52.3

    41.9

    38.9

    15.9

    15.3

    43.0

    37.1

    13.1

    19.0

    24.7

    29.2

    24.5

    32.5

    1.7

    6.2

    17.4

    32.8

    vol.19-3

  • 1980

    1999

    32

    20

    1980

    1999

    1980

    1999

    1980

    1999

    1980

    1999

    1980

    1999

    28.6

    38.9

    26.6

    41.2

    25.2

    45.3

    39.1

    37.2

    31.4

    41.7

    30.9

    41.7

    33.7

    33.6

    29.0

    37.7

    32.9

    43.7

    26.2

    27.2

    24.6

    27.0

    20.3

    31.1

    4.5

    10.0

    2.3

    9.8

    4.3

    13.3

    vol.19-3

  • 33

    1980

    1999

    4.9

    2.9

    4.4

    4.39.3

    7.2

    32.9

    34.8

    36.4

    37.9

    21.4

    20.157.8

    58.0

    1980

    1999

    11.6

    4.5

    24.3

    11.835.9

    16.3

    47.8

    44.2

    9.4

    26.6

    6.9

    12.916.3

    39.5

    1980

    1999

    4.9

    2.7

    7.4

    9.512.3

    12.2

    26.8

    37.2

    41.1

    36.7

    19.8

    13.960.9

    50.6

    1980

    1999

    4.1

    6.2

    3.5

    8.27.6

    14.4

    35.3

    44.7

    30.9

    24.7

    26.2

    16.257.1

    40.9

    1980

    1999

    4.5

    4.5

    13.8

    14.918.3

    19.4

    48.9

    45.3

    21.9

    25.2

    10.9

    10.132.8

    35.31980

    1999

    21.0

    12.7

    33.8

    27.954.8

    40.6

    35.1

    40.6

    5.7

    11.2

    4.4

    7.610.1

    18.8

    1980

    1999

    3.8

    6.3

    4.4

    16.68.2

    22.9

    53.8

    54.2

    27.2

    15.6

    10.8

    7.338.0

    22.9

    1980

    1999

    18.4

    14.6

    18.3

    19.736.7

    34.3

    48.1

    45.2

    8.0

    11.7

    7.2

    8.815.2

    20.5

    54

    vol.19-3

  • 20

    1980

    1999

    20

    28

    1980

    7557

    20

    34

    vol.19-3

  • 35

    1980

    1999

    1980

    1999

    1980

    1999

    1980

    1999

    1980

    1999

    1980

    1999

    1980

    1999

    1980

    1999

    14.6

    10.5

    39.2

    41.2

    46.2

    48.3

    3.2

    3.2

    25.8

    27.9

    71.0

    68.9

    41.7

    19.0

    42.3

    44.9

    16.0

    36.1

    29.1

    13.1

    54.2

    44.2

    16.7

    42.7

    20.2

    16.0

    31.5

    38.9

    48.3

    45.1

    3.3

    7.8

    21.6

    35.3

    75.1

    56.9

    7.1

    17.2

    31.7

    46.4

    61.2

    36.4

    8.2

    11.1

    39.3

    43.2

    52.5

    45.7

    22.8

    22.9

    49.9

    44.9

    27.3

    32.2

    13.4

    15.6

    47.7

    46.0

    38.9

    38.4

    11.9

    25.4

    53.1

    54.9

    35.0

    19.7

    3.9

    20.3

    54.7

    53.3

    41.4

    26.4

    49.4

    41.1

    40.4

    44.7

    10.2

    14.2

    22.2

    26.7

    57.1

    46.1

    20.7

    27.2

    62.7

    44.2

    28.6

    39.0

    8.7

    16.8

    45.9

    36.3

    42.5

    42.5

    11.6

    21.2

    vol.19-3

  • 36

    1980

    vol.19-3

  • 37

    1980

    1999

    1980

    1999

    1980

    1999

    1980

    1999

    1980

    1999

    1980

    1999

    1980

    1999

    1980

    1999

    50.2

    58.2

    57.4

    60.4

    66.2

    55.9

    24.8

    36.9

    8.9

    40.4

    16.9

    41.1

    54.5

    41.5

    58.1

    51.2

    70.8

    58.3

    61.7

    41.4

    58.0

    44.7

    51.3

    36.6

    34.5

    40.7

    16.5

    23.3

    40.9

    31.5

    25.9

    22.6

    29.4

    34.8

    35.2

    31.0

    5.8

    21.5

    8.9

    12.0

    38.6

    22.2

    34.4

    16.0

    9.1

    24.7

    11.7

    14.3

    48

    vol.19-3

  • 1980

    10

    20

    1980

    1999

    1980

    1999

    1980

    1999

    1980

    1999

    1980

    1999

    1980

    1999

    25.3

    27.3

    53.6

    49.3

    17.8

    20.0

    2.6

    2.7

    0.7

    0.7

    41.0

    35.5

    44.6

    43.7

    10.1

    15.4

    3.3

    3.7

    1.0

    1.7

    39.8

    37.5

    39.9

    38.3

    12.5

    15.4

    4.4

    4.6

    3.4

    4.2

    54.6

    43.0

    37.3

    43.9

    5.2

    10.8

    2.2

    1.7

    0.7

    0.6

    58.1

    48.5

    30.7

    39.8

    8.2

    9.3

    2.3

    1.6

    0.7

    0.8

    59.0

    51.3

    23.5

    24.4

    8.6

    11.1

    5.2

    6.8

    3.7

    6.4

    38

    vol.19-3

  • 39

    10

    20

    10

    20

    1980 1999 1980 1999

    79.2

    87.9

    84.2

    91.8

    88.3

    81.2

    79.3

    81.7

    81.7

    89.5

    90.3

    75.5

    78.6

    83.9

    76.2

    91.9

    89.4

    83.8

    73.5

    76.1

    69.1

    84.2

    86.3

    75.8

    10

    vol.19-3

  • 40

    19801999

    1980

    1999

    1999

    1980

    vol.19-3

  • 1980

    1999

    1980

    1999

    1980

    1999

    1980

    1999

    1980

    1999

    7.9 12.0

    19.9

    8.3 7.8

    16.1

    15.1 11.7

    26.8

    15.1 17.0

    32.1

    11.0 7.7

    18.7

    9.8 10.1

    19.9

    20.4 9.5

    29.9

    16.0 10.6

    26.6

    21.2 13.4

    34.6

    15.4 11.9

    27.3

    24.2 29.0

    53.2

    17.9 23.8

    41.7

    5.0 13.9

    18.9

    6.1 9.9

    16.0

    5.6 10.7

    16.3

    8.4 10.8

    19.2

    2.0 6.1

    8.1

    3.3 5.4

    8.7

    2.5 4.5

    7.0

    6.0 6.2

    24.0

    22.1

    34.1

    32.9

    27.8

    27.4

    22.8

    24.8

    13.4

    17.1

    29.3

    29.7

    28.3

    31.2

    26.0

    26.8

    34.5

    39.2

    26.4

    29.0

    12.2

    41

    vol.19-3

  • 19801999

    65

    1980

    1999

    1980

    16

    35

    1980181999

    24

    1980199912

    42

    0 5 10 15 20 25

    1980

    1999

    7.0

    8.1

    16.3

    16.1

    16.0 18.9

    19.2

    8.7

    12.2

    19.9

    vol.19-3

  • 43

    1980

    33.2 33.4

    66.61999 33.1 32.1

    18.5

    24.6

    9.9

    7.4

    5.0

    2.8

    21.7

    24.3

    18.1

    13.6

    11.2

    5.3

    30.5

    40.0

    16.6

    16.2

    13.1

    7.5

    29.4

    36.8

    18.4

    8.7

    15.6

    3.9

    31.2

    43.3

    24.7

    18.8

    15.9

    7.8

    23.6

    32.5

    19.7

    18.4

    35.4

    16.6

    23.9

    36.1

    26.0

    28.1

    33.4

    17.7

    28.2

    35.8

    24.9

    25.0

    30.6

    16.1

    12.7

    27.5

    22.9

    20.8

    53.6

    23.8

    17.1

    25.5

    30.7

    30.2

    42.2

    26.3

    65.2

    1980 18.2 30.8

    49.01999 24.3 32.5

    56.8

    1980 14.0 25.8

    39.81999 8.7 27.6

    36.3

    1980 12.7 23.9

    36.61999 17.3 33.3

    50.6

    1980 9.7 18.5

    28.21999 7.4 22.7

    30.1

    1980 6.4 14.9

    21.31999 9.3 23.2

    32.5

    1980 6.4 10.3

    16.71999 5.5 12.6

    18.1

    1980 5.6 10.7

    16.31999 6.8 16.3

    23.1

    1980 4.9 5.9

    10.81999 12.2 15.7

    27.9

    1980 3.7 6.3

    10.01999 4.8 13.2

    18.0

    vol.19-3

  • 44

    19801999

    50

    50

    291980

    1980

    500 100

    1980

    1999

    66.6

    49.0

    39.8

    36.6

    28.2

    21.3

    16.7

    16.3

    10.8

    10.0

    65.2

    56.8

    36.3

    50.6

    30.1

    32.5

    18.1

    23.1

    27.9

    18.0

    vol.19-3

  • 1980

    1999

    37.0 15.1

    52.1

    22.2 19.5

    20.7

    30.5

    14.2

    17.6

    13.0

    10.2

    23.7

    23.8

    17.9

    10.5

    6.6

    6.0

    14.0

    18.6

    14.7

    13.0

    19.5

    15.2

    6.3

    8.3

    10.6

    10.2

    51.7

    32.0

    27.8

    31.1

    19.5

    9.9

    24.0

    8.9

    8.0

    14.4

    17.4

    23.3

    66.8

    33.6

    9.2

    18.0

    16.1

    24.3

    68.0

    50.8

    41.7

    1980

    1999

    31.8 20.0

    51.8

    31.6 28.1

    59.7

    1980

    1999

    22.9 28.9

    51.8

    26.8 26.4

    53.2

    1980

    1999

    27.7 3.7

    31.4

    38.2 11.3

    49.5

    1980

    1999

    15.6 13.1

    28.7

    32.1 18.0

    50.1

    1980

    1999

    1.6 6.2

    7.8

    10.6 18.1

    28.7

    1980

    1999

    1.7 5.0

    6.7

    2.5 4.4

    6.9

    45

    vol.19-3

  • 20

    46

    41.7

    51.8

    51.8

    31.4

    28.7

    7.8

    6.7

    52.1

    59.7

    53.2

    49.5

    50.1

    28.7

    6.9

    0 50 100

    1999

    1980

    vol.19-3

  • 47

    1980

    10

    vol.19-3

  • 48

    1980

    16

    19992812

    4534

    15.6

    12.2

    28.9

    21.2

    31.9

    39.3

    16.4

    19.1

    7.2

    8.2

    20.0

    15.4

    27.1

    21.0

    30.6

    36.1

    14.5

    18.0

    7.8

    9.5

    10.5

    8.8

    31.0

    21.0

    33.4

    43.0

    18.6

    20.2

    6.5

    7.0

    1980

    1999

    1980

    1999

    1980

    1999

    1980

    1999

    4.1

    9.2

    6.7

    12.2

    1.2

    5.9

    1980

    1999

    1980

    1999

    4.1

    7.3

    4.3

    7.2

    3.8

    7.2

    8.1

    11.6

    9.2

    11.9

    6.8

    11.5

    38.8

    37.5

    37.2

    33.4

    40.7

    42.4

    15.8

    9.5

    15.7

    9.3

    16.1

    9.4

    11.6

    8.4

    10.4

    7.2

    13.0

    9.8

    17.5

    16.5

    16.5

    18.8

    18.4

    13.8

    vol.19-3

  • 49

    1999

    1980 1999

    29.3 47.7

    77.0

    4.5 34.0

    38.5

    6.7 36.9

    43.6

    3.1 30.6

    33.7

    4.9 28.3

    33.2

    29.0 44.8

    73.8

    9.0 33.9

    42.9

    7.8 26.2

    34.0

    7.5 26.0

    33.5

    8.9 21.0

    29.9

    3.2

    4.4

    9.6

    0.2

    3.3

    vol.19-3

  • 50

    1980

    0 20 40 60 80

    63.5

    56.4

    61.1

    55.2

    52.6

    44.5

    50.0

    44.7

    49.5

    41.8

    48.8

    47.8

    46.6

    44.1

    44.6

    40.5

    38.3

    32.7

    37.2

    38.9

    1980

    1999

    1980

    1999

    1980

    1999

    1980

    1999

    1980

    1999

    1980

    1999

    1980

    1999

    1980

    1999

    1980

    1999

    1980

    1999

    vol.19-3

  • 51

    1980

    1980324816

    15

    1980 1999

    13.6 33.2

    46.8

    22.1 32.8

    54.9

    8.0 23.5

    31.5

    12.3 28.6

    40.9

    19.7 28.0

    47.7

    23.2 38.3

    61.5

    25.7 26.4

    52.1

    16.6 31.2

    47.8

    17.0 27.8

    44.8

    18.7 22.9

    41.6

    14.7

    2.8

    16.3

    3.9

    6.1

    vol.19-3

  • 20

    20

    1980581999

    4414

    20

    1980

    1999

    11

    20

    52

    vol.19-3

  • 19801999

    1980

    1999

    19801999

    198060

    19994614

    53

    1980

    1980

    1999

    1980

    26.6 17.0 20.7

    14.8

    21.3

    16.4

    20.2

    12.9

    24.6

    22.0

    28.1

    24.1

    20.6

    19.5

    43.6

    36.6 21.5

    58.1

    22.8 15.4

    38.2

    31.8 21.3

    53.1

    31.0 18.8

    49.8

    42.3 21.8

    64.1

    1999

    1999

    5.6 2.1 3.4

    11.1

    3.5 0.7 0.9

    5.1

    5.4 2.7 4.3

    12.4

    4.1 0.9 1.4

    6.4

    5.8 1.2 2.4

    9.4

    2.7 0.4 0.4

    3.5

    1980

    1999

    60.2

    46.2

    54.0

    40.9

    67.2

    52.1

    4.4

    9.8

    5.2

    10.1

    3.7

    9.4

    vol.19-3

  • 19801999

    1999

    65

    1999

    1980301999

    35

    19801999

    1980

    1980

    1999

    20

    54

    1999

    1980 36.3

    33.2

    36.0

    35.5

    64.7

    66.3

    30.4

    35.2

    31.6

    29.0

    31.6

    32.2

    56.9

    59.6

    27.6

    31.6

    41.7

    38.1

    41.0

    39.5

    73.4

    73.7

    33.5

    39.7

    1999

    1980

    1999

    1980

    1999

    1980

    vol.19-3

  • 19801999

    1980

    55

    24.7

    26.2

    22.3

    22.3

    19.6

    14.5

    32.3

    35.9

    13.9

    14.1

    35.4

    31.4

    27.5

    33.0

    14.9

    13.0

    24.5

    26.6

    24.8

    25.0

    22.9

    19.0

    33.0

    41.7

    13.7

    14.4

    35.7

    30.8

    30.1

    35.9

    16.5

    14.6

    24.9

    26.0

    19.5

    19.2

    16.1

    9.4

    31.6

    29.4

    14.1

    13.6

    35.2

    31.8

    24.7

    29.5

    13.2

    11.1

    25.0

    25.9

    21.4

    23.1

    19.1

    25.0

    12.8

    15.8

    35.5

    38.9

    26.8

    31.1

    15.9

    20.4

    37.8

    41.2

    1999

    1980

    1999

    1980

    1999

    1980

    1999

    1980

    1999

    1980

    1999

    1980

    1999

    1980

    1999

    1980

    vol.19-3

  • 20

    20

    12

    198033199942

    5.9

    2.0 1.6

    3.7

    1.3

    10

    20

    10

    19801999

    6.3

    5.9

    5.95.4

    4.1

    4.0

    3.73.7

    6.3

    20

    6.3

    20

    10

    20

    56

    vol.19-3

  • 57

    1999

    1980 32.4

    30.8

    38.3

    39.5

    26.1

    21.4

    35.4

    28.6

    28.2

    28.4

    23.9

    29.8

    20.3

    25.7

    27.9

    34.0

    22.2

    31.6

    26.4

    31.8

    22.8

    21.9

    24.8

    23.4

    20.8

    20.0

    24.7

    20.0

    20.3

    20.9

    20.4

    26.3

    20.2

    26.6

    20.7

    25.6

    19.9

    30.6

    21.1

    24.1

    8.9

    8.3

    10.4

    9.9

    7.4

    6.6

    8.8

    4.3

    9.0

    9.0

    53.3

    57.4

    55.5

    60.1

    50.7

    54.5

    53.8

    63.6

    52.6

    60.3

    8.4

    8.2

    11.4

    10.2

    5.1

    6.0

    8.5

    4.7

    8.1

    9.2

    60.3

    65.7

    58.3

    65.1

    62.4

    66.4

    59.8

    72.0

    61.0

    68.5

    16.9

    16.4

    17.2

    17.1

    16.5

    15.4

    18.1

    13.7

    15.2

    16.6

    36.0

    40.0

    37.3

    41.9

    34.6

    37.6

    35.8

    45.3

    35.5

    37.1

    24.2

    22.2

    25.2

    23.4

    23.2

    21.2

    24.8

    19.1

    23.4

    21.4

    21.0

    24.7

    25.2

    25.7

    16.8

    23.1

    22.8

    30.0

    18.7

    22.6

    12.9

    16.6

    15.2

    17.7

    10.6

    15.4

    13.2

    13.3

    12.5

    16.7

    40.9

    39.5

    41.1

    39.9

    40.7

    38.6

    42.4

    45.8

    38.8

    38.9

    42.0

    41.6

    48.6

    44.9

    35.0

    38.3

    42.5

    39.9

    41.3

    38.0

    18.5

    18.6

    17.2

    20.1

    19.8

    16.9

    19.2

    21.0

    17.4

    18.9

    16.2

    17.5

    18.8

    18.7

    13.5

    16.1

    17.9

    16.9

    14.0

    13.4

    43.6

    47.3

    42.4

    49.7

    44.8

    44.6

    43.3

    51.2

    44.0

    49.7

    34.0

    28.1

    43.1

    34.8

    24.3

    21.0

    35.6

    25.8

    31.7

    25.9

    22.7

    29.0

    18.6

    27.9

    26.9

    29.7

    23.3

    33.5

    21.7

    27.8

    1999

    1980

    1999

    1980

    1999

    1980

    1999

    1980

    1999

    1980

    1999

    1980

    1999

    1980

    1999

    1980

    1999

    1980

    vol.19-3

  • 58

    q

    198077199960

    5035

    12

    w

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    vol.19-3

  • 59

    4553

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    vol.19-3

  • 61

    vol.19-3

  • 62

    300

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    vol.19-3

  • 63

    ?

    40

    vol.19-3

  • 64

    m2

    vol.19-3

  • 65

    vol.19-3

  • 66

    m3

    vol.19-3

  • 67

    vol.19-3

  • 68

    m4

    vol.19-3

  • 69

    10

    vol.19-3

  • 70

    m5

    vol.19-3

  • 71

    100

    m6

    vol.19-3

  • 72

    13

    m7

    vol.19-3

  • 73

    100

    m8

    vol.19-3

  • 74

    1999300

    vol.19-3

  • 75

    1 2 3 4

    5

    1.

    2.

    3.

    1

    vol.19-3

  • 76

    1.

    2.

    3.

    4.

    5

    6.

    2

    1

    1.

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  • 77

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  • 82

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    vol.19-3

  • 83

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  • 84

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  • 85

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    24

    vol.19-3

  • 2

    86

    1980 1999

    v

    z

    c

    x

    848270274304

    79.88.84.42.32.32.413.938.636.610.95.215.544.634.76.117.136.840.06.32.98.446.614.521.35.94.616.054.711.07.89.17.319.737.714.911.312.37.815.525.916.821.7

    85.57.43.11.91.30.818.641.728.711.05.719.644.829.95.312.337.944.54.53.89.245.417.519.65.56.518.346.116.86.88.511.521.131.717.49.811.912.319.727.715.612.8

    1,62051154156884875881.87.74.22.32.21.814.440.936.38.44.516.947.231.45.518.740.135.74.42.68.649.116.718.65.44.716.654.412.96.08.17.922.437.313.910.410.18.315.626.318.721.0

    511

    83.98.92.42.01.41.412.038.238.011.83.817.243.635.45.916.038.339.86.62.612.252.213.612.86.76.119.153.710.34.110.48.823.237.512.27.914.110.015.924.818.117.1

    541

    82.86.94.71.72.41.514.842.634.58.15.817.646.729.95.421.139.334.25.23.76.749.415.419.66.44.718.152.313.15.49.09.321.837.113.19.79.17.815.723.721.322.4

    568

    78.97.45.43.12.72.516.241.636.65.63.816.050.829.45.218.742.633.51.81.47.146.120.722.93.43.413.056.815.08.45.45.722.337.116.313.27.57.115.430.416.623.0

    758238260260

    84.16.44.22.12.11.114.843.536.05.73.618.649.828.05.020.543.830.72.42.38.951.519.115.85.04.817.254.114.94.07.18.525.736.912.89.07.78.916.027.020.719.7

    vol.19-3

  • 87

    2

    1980 1999

    v

    50.620.812.0

    4.03.19.5

    32.218.519.823.63.12.854.924.011.47.91.10.769.018.86.14.80.21.117.414.519.622.910.914.719.814.622.633.35.14.633.721.821.815.53.24.017.917.422.237.52.12.9

    2.75.512.313.322.543.7

    27.922.120.523.44.31.851.126.311.68.31.51.251.422.911.610.42.31.420.915.720.725.310.56.923.717.520.230.74.63.332.722.920.715.24.73.824.820.821.426.74.02.3

    43.918.914.412.76.14.029.318.121.726.12.72.154.025.911.16.71.40.968.119.76.34.50.41.019.614.920.324.010.410.829.017.221.325.93.63.031.521.022.217.73.54.118.417.522.536.82.62.2

    3.95.713.413.615.547.9

    34.217.218.426.42.21.653.325.710.67.41.81.265.121.28.34.20.21.020.511.919.624.310.513.229.018.323.823.43.91.629.423.119.417.55.05.618.920.123.434.61.21.8

    3.56.911.512.120.545.5

    30.019.721.823.81.92.856.725.010.17.10.40.771.117.95.04.50.41.119.514.419.225.510.710.731.719.119.123.44.12.633.419.321.219.33.23.619.218.022.236.42.51.7

    4.75.713.217.220.438.8

    24.317.424.528.23.81.852.127.012.55.72.00.768.220.15.64.70.50.918.817.822.022.210.19.126.514.321.330.32.94.731.920.725.616.32.43.117.414.822.138.83.83.1

    36.816.516.9

    4.09.416.4

    26.218.023.828.42.21.453.328.310.55.21.61.167.320.76.64.00.50.921.315.721.625.49.86.239.619.820.317.12.01.229.519.922.520.13.94.119.218.022.935.43.01.5

    vol.19-3

  • 2

    88

    1980 1999

    v

    b

    14.617.523.4

    5.15.933.5

    39.330.117.811.00.81.03.54.110.534.421.925.620.510.713.638.96.69.727.55.77.044.44.111.318.536.329.515.752.032.88.86.437.039.316.07.730.631.124.114.267.426.5

    3.96.325.718.619.625.9

    38.928.217.511.72.31.43.77.215.640.919.613.020.613.816.133.98.86.827.69.38.638.64.411.529.635.727.96.864.823.78.33.250.131.515.92.546.927.117.98.168.021.4

    21.418.322.629.05.03.738.530.318.111.40.80.93.94.912.336.621.321.019.010.314.540.47.48.424.56.18.746.24.69.920.039.428.711.948.834.610.95.735.339.618.56.631.230.224.813.859.431.5

    4.55.325.121.520.922.7

    40.929.714.113.50.81.05.96.713.037.717.619.117.910.315.339.98.58.122.77.57.744.05.113.022.932.131.613.452.730.610.76.037.937.219.25.733.029.624.812.662.429.2

    3.25.028.921.817.423.7

    40.430.617.89.90.90.43.44.311.832.823.224.520.110.615.239.57.27.425.36.610.145.44.97.719.538.927.913.747.835.510.66.135.839.319.45.531.331.024.013.762.727.4

    3.64.732.624.416.817.9

    34.430.721.911.00.71.32.73.912.239.022.819.418.910.013.041.96.69.625.34.58.348.73.89.418.046.126.99.046.337.311.45.032.442.116.98.629.729.925.614.853.737.4

    29.319.221.1

    2.34.024.1

    37.430.418.612.00.80.84.35.814.539.321.015.117.69.815.441.88.47.021.56.610.348.05.18.521.642.727.97.845.236.713.24.933.439.921.15.631.829.325.413.550.836.7

    4.58.2 7.3 6.8 8.0 6.910.41.62.4 1.8 1.6 1.9 2.02.1

    vol.19-3

  • 89

    2

    1980 1999

    64.127.56.6

    33.435.21.8

    22.29.261.622.67.97.978.216.54.11.236.333.418.411.959.328.58.43.874.218.23.93.732.328.830.88.112.217.837.632.422.421.527.428.713.532.534.519.548.431.214.46.0

    32.140.80.74.418.476.5

    18.88.363.719.09.28.176.017.35.11.652.728.013.75.666.023.68.02.477.315.85.21.733.020.226.020.812.216.627.643.625.622.728.623.117.438.030.414.223.728.430.617.3

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    31.631.12.48.828.360.5

    26.710.657.624.511.76.269.722.16.41.845.025.818.111.149.530.715.24.669.920.46.13.647.526.219.07.314.822.829.133.338.424.420.217.026.238.022.113.745.128.117.89.0

    33.234.92.17.526.863.6

    22.99.057.123.88.610.571.318.66.73.445.531.514.48.650.029.914.95.270.418.86.14.742.027.025.85.212.315.137.035.631.224.523.720.620.738.528.112.734.934.623.86.7

    35.631.62.37.734.056.0

    23.09.856.025.88.010.266.226.56.40.942.136.313.97.746.935.713.53.969.320.66.23.937.930.426.55.210.010.636.343.120.722.928.927.517.435.732.614.328.534.227.59.8

    55.732.09.5

    33.829.92.8

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    b

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    vol.19-3

  • 2

    90

    1980 1999

    m

    n

    52.324.314.3

    24.452.19.1

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    22.552.215.529.228.426.9

    13.511.839.337.616.26.910.624.542.322.622.126.629.222.168.625.14.22.132.029.316.211.96.73.952.418.010.27.77.74.05.016.818.721.720.916.96.817.117.220.519.718.7

    45.225.618.211.041.425.119.414.154.930.29.75.213.931.640.414.135.330.622.411.761.528.26.43.937.123.513.011.810.14.562.613.68.26.55.73.48.616.615.224.823.411.49.013.613.720.522.620.6

    24.746.911.818.125.844.3

    14.214.255.229.68.56.723.339.524.113.144.229.216.110.553.132.38.46.236.624.310.710.711.16.656.614.07.57.18.95.912.017.712.017.322.918.112.815.69.214.423.424.6

    24.342.99.917.524.548.1

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    37.726.622.6

    26.228.813.1

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    vol.19-3

  • 91

    2

    1980 1999

    .

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    8.313.515.2

    15.326.421.3

    11.312.212.020.721.722.110.410.913.318.723.822.97.910.49.916.225.130.522.640.636.89.640.050.420.036.143.958.026.615.414.435.550.122.815.421.328.15.42.74.3

    13.917.419.519.621.58.1

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    13.519.117.320.719.89.612.417.315.420.519.015.413.617.214.421.319.314.211.516.611.218.521.021.234.936.628.513.746.040.324.037.538.567.521.411.121.936.241.926.617.020.724.65.62.13.4

    12.418.217.015.020.217.2

    14.116.512.414.917.125.017.915.911.615.117.721.812.516.98.213.120.528.835.437.427.217.845.037.226.140.333.669.520.510.023.237.938.927.316.619.426.94.01.84.0

    8.122.219.517.919.712.6

    11.417.216.820.122.412.111.219.414.823.521.99.210.117.513.116.422.220.738.734.327.012.146.241.726.336.037.765.924.39.821.337.541.228.618.118.723.95.42.13.2

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    11.818.116.925.717.410.112.016.116.724.518.312.411.915.312.125.420.115.230.838.131.111.646.741.719.936.443.767.219.513.321.233.545.323.916.323.823.37.22.33.2

    19.325.319.6

    3.212.220.4

    13.623.119.020.515.88.017.024.315.824.313.94.715.723.612.421.216.410.748.732.319.018.552.329.228.638.932.578.515.36.230.137.132.831.018.820.220.65.81.22.4

    vol.19-3

  • 2

    92

    1980 1999

    2

    0

    1

    28.012.921.6

    1.75.327.4

    3.116.312.721.532.38.92.75.617.514.718.430.58.73.76.541.917.715.416.71.71.55.120.611.017.427.98.04.410.74.56.041.228.919.46.412.644.923.212.93.812.2

    32.1

    1.02.418.417.020.539.7

    1.017.219.123.330.36.11.82.217.818.217.530.98.73.53.443.820.914.016.71.81.11.715.315.115.63.110.433.37.24.94.432.936.421.411.624.347.89.46.94.97.4

    29.816.419.624.45.51.23.118.314.923.929.47.22.43.918.716.821.028.27.83.14.447.219.113.113.32.31.23.821.713.516.328.18.14.18.22.94.334.837.920.14.511.844.226.612.92.79.5

    0.45.425.220.516.528.6

    3.420.914.824.329.04.31.65.121.118.521.522.56.93.06.549.918.610.111.73.00.85.918.513.814.228.210.74.79.94.36.730.838.419.85.714.243.223.513.44.014.1

    30.6

    1.75.423.319.217.530.1

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    34.6

    1.45.624.819.215.330.5

    3.216.613.424.529.49.72.34.117.115.821.030.29.22.93.844.319.914.315.61.61.62.724.613.816.828.75.63.27.31.63.039.536.019.93.910.644.426.914.22.35.6

    44.3

    32.120.017.5

    0.75.621.0

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    vol.19-3

  • 93

    2

    1980 1999

    3

    2

    7.39.946.4

    6.816.719.7

    16.144.921.710.517.626.639.09.07.88.117.354.911.78.020.720.444.76.77.530.249.117.42.31.053.337.08.01.00.748.341.28.51.30.740.041.713.33.31.743.738.0

    3.3

    4.526.230.935.33.54.1

    13.848.921.910.921.033.835.15.74.43.84.453.827.210.818.418.348.18.07.225.353.617.82.60.758.130.78.22.30.754.637.35.22.20.741.044.610.13.31.039.839.9

    3.4

    6.28.244.724.716.24.514.945.325.210.112.727.940.611.27.66.316.654.215.67.314.619.745.211.78.827.349.320.02.70.748.539.89.31.60.843.043.910.81.70.635.543.715.43.71.737.538.3

    4.2

    5.018.922.542.09.07.6

    14.739.627.413.311.723.741.314.09.37.015.146.421.510.014.719.043.712.79.934.039.722.32.91.151.236.18.92.31.546.537.812.91.71.140.438.115.63.82.141.433.5

    3.5

    5.017.027.741.68.15.6

    16.643.626.48.411.825.141.612.98.66.519.352.015.17.112.918.743.714.010.724.055.718.21.90.248.340.110.50.90.239.847.910.81.30.232.147.916.32.80.936.940.4

    3.6

    3.612.923.750.47.65.4

    13.452.022.09.014.534.439.17.05.05.615.463.010.85.216.221.248.38.45.924.851.319.83.20.946.442.78.61.60.743.145.29.02.00.734.644.514.44.52.034.740.6

    5.3

    4.86.343.2

    1.915.330.4

    13.746.029.09.47.029.342.513.87.44.415.953.320.16.37.719.046.117.49.824.049.523.13.00.443.542.810.62.30.836.747.513.31.90.630.445.717.94.31.730.238.9

    12.212.5 15.4 16.8 15.5 14.119.02.84.4 4.6 4.8 3.6 5.36.7

    5.2

    vol.19-3

  • 2

    94

    1980 1999

    5

    4

    3

    51.124.411.2

    10.06.66.7

    8.222.331.012.216.34.55.125.736.513.914.311.213.229.222.314.110.05.69.330.032.99.712.57.07.118.627.915.523.99.925.640.114.89.69.818.532.918.620.29.223.841.7

    7.93.75.28.623.559.0

    12.024.029.315.111.72.06.122.834.521.213.45.610.727.826.020.49.55.013.934.128.311.07.72.54.513.426.424.229.014.025.830.516.613.16.414.923.619.735.49.718.531.2

    51.324.411.16.86.48.37.822.129.715.117.03.35.424.839.215.411.98.410.827.426.816.010.66.19.932.931.29.810.16.06.217.129.017.923.88.727.640.016.27.59.323.232.518.416.67.422.743.3

    7.78.18.18.922.952.0

    9.325.132.510.914.54.67.424.740.213.39.810.19.522.427.617.912.56.611.630.730.311.29.67.15.718.228.819.221.08.927.044.215.74.28.921.029.822.517.88.126.140.9

    7.76.48.011.023.351.3

    8.023.028.616.116.62.85.124.238.417.012.59.79.128.925.614.412.37.28.931.632.18.012.24.75.516.328.317.228.07.027.037.017.711.37.020.531.717.323.57.123.537.3

    9.54.94.713.026.750.7

    6.318.528.118.119.52.54.025.439.015.813.35.713.630.527.215.87.24.79.435.731.210.38.76.17.217.029.917.422.410.028.639.615.26.612.027.735.515.98.97.019.150.9

    51.724.111.1

    6.66.26.9

    7.221.428.918.217.71.75.824.042.217.19.25.38.125.031.718.411.56.510.936.229.39.97.24.65.215.530.320.823.67.430.039.917.65.18.828.931.818.212.35.121.844.8

    16.524.7 18.8 17.8 21.6 17.121.58.815.9 7.8 7.1 10.5 5.96.8

    vol.19-3

  • 95

    2

    1980 1999

    6

    5

    5.313.724.8

    22.029.425.415.87.4

    28.827.4

    17.431.436.410.24.636.930.122.96.33.811.515.625.319.628.06.711.136.026.220.07.415.137.821.817.926.323.017.213.719.810.217.915.719.137.13.33.216.721.455.4

    18.230.821.718.111.2

    42.230.717.16.33.7

    12.723.929.418.415.633.233.418.59.95.04.95.912.722.953.66.410.323.926.033.45.610.728.224.930.622.928.914.014.719.51.66.28.017.466.81.75.09.216.168.0

    4.813.225.530.226.324.332.524.313.65.317.333.336.88.73.933.132.124.67.42.812.215.727.520.823.85.512.636.128.117.76.816.335.825.016.126.826.418.613.015.210.618.114.423.333.62.54.418.024.350.8

    22.127.227.517.85.4

    24.129.626.514.25.6

    17.735.433.110.63.235.925.226.08.64.39.916.426.520.326.97.615.233.727.316.25.817.832.027.017.428.218.421.813.618.014.215.615.021.833.43.44.322.822.047.5

    21.134.723.314.56.4

    28.229.825.013.43.6

    14.932.039.28.35.633.033.722.48.32.614.716.221.920.626.64.112.837.025.021.16.014.936.524.917.726.025.316.513.518.713.915.511.022.137.53.44.514.024.353.8

    29.434.422.69.34.3

    26.231.125.112.25.4

    19.232.937.87.42.731.036.425.45.61.611.714.733.621.518.55.010.437.231.815.68.216.538.623.313.426.434.318.011.99.44.422.617.125.630.30.94.317.826.350.7

    4.312.326.3

    27.235.623.211.22.8

    23.933.2

    17.435.537.46.73.029.134.426.38.51.713.115.930.122.118.84.314.236.030.315.26.217.933.628.513.827.530.320.412.09.810.918.412.928.229.61.55.819.227.645.9

    vol.19-3

  • 2

    96

    1980 1999

    9

    6

    7

    8

    32.826.124.2

    23.47.19.8

    17.630.318.310.438.011.89.39.731.228.519.831.69.510.615.421.036.118.09.512.27.211.933.49.37.218.813.911.531.032.910.725.214.626.822.910.515.716.832.426.38.8

    37.06.617.923.720.031.8

    15.120.714.213.027.73.76.310.651.715.613.127.819.524.015.628.931.916.47.24.14.18.138.815.811.617.510.615.735.234.04.512.718.136.028.34.910.816.838.730.63.1

    31.628.123.810.56.022.219.530.517.610.238.211.38.310.232.032.118.031.19.98.912.221.239.319.18.29.27.311.637.59.58.416.511.311.534.333.99.022.318.129.721.08.914.117.135.326.07.5

    20.58.47.625.125.133.8

    20.528.815.115.139.814.912.88.524.035.221.427.18.87.517.822.836.016.86.610.510.516.733.97.97.712.811.910.731.238.08.218.312.730.128.310.614.616.031.530.47.5

    23.45.712.925.628.727.1

    20.731.316.08.644.913.95.54.731.035.214.130.89.210.712.222.639.417.78.19.76.010.737.08.39.518.812.810.734.634.97.025.121.030.218.55.216.716.238.523.15.5

    22.54.310.621.130.133.9

    17.730.821.37.730.35.77.416.939.726.818.834.811.48.27.318.442.022.59.87.75.78.340.711.98.117.69.512.936.829.311.523.320.328.916.710.811.118.835.924.99.3

    30.130.623.4

    20.84.711.2

    21.830.616.99.938.210.77.411.032.736.715.630.510.46.88.821.043.020.27.05.97.211.542.49.49.813.88.411.138.235.17.219.121.833.218.87.112.116.939.225.86.0

    vol.19-3

  • 97

    2

    1980 1999

    0

    9

    19.316.932.8

    10.38.322.7

    4.614.943.127.156.127.013.33.642.830.921.64.750.226.717.06.161.623.69.85.046.427.222.34.154.428.912.64.149.829.915.94.454.226.314.35.246.928.019.35.836.0

    4.56.736.934.612.29.6

    5.413.147.729.355.227.415.12.338.936.022.52.644.536.115.04.456.431.59.32.832.735.926.74.744.735.016.73.647.836.012.63.644.132.020.03.941.834.619.54.140.5

    21.4

    15.316.833.926.27.87.84.014.444.829.061.125.99.83.237.233.823.45.652.629.013.45.063.523.78.84.038.329.726.85.250.030.115.64.348.831.915.14.246.627.619.16.749.528.816.94.844.6

    9.38.925.633.915.715.9

    3.012.743.831.261.023.713.12.238.334.123.44.251.426.317.84.561.324.610.73.437.428.329.44.947.231.218.43.247.133.317.02.643.326.723.76.349.129.917.53.541.9

    8.35.623.035.018.418.0

    4.916.943.726.264.126.68.40.936.435.324.24.156.828.811.82.667.123.67.41.939.532.225.33.051.731.814.32.249.933.513.63.049.127.918.14.952.729.615.12.648.6

    5.99.029.733.016.212.1

    4.113.546.729.858.127.28.46.337.132.022.78.249.731.710.97.762.322.98.46.438.028.625.97.551.027.414.37.349.429.214.86.646.928.216.18.846.727.118.18.143.2

    10.716.135.6

    4.57.530.1

    3.513.647.031.466.324.86.12.831.037.125.36.655.031.99.23.965.823.77.62.929.532.231.96.445.231.218.94.747.934.014.23.938.129.324.28.452.429.914.03.754.126.117.130.0 21.5 22.1 20.7 21.7

    20.78.1 12.7 13.4 14.7 13.6 6.026.2 23.3 17.3 20.4 20.3 13.8

    vol.19-3

  • 98

    1980 1999

    2

    1

    29.224.532.6

    18.75.78.0

    28.937.89.45.217.830.034.811.16.324.638.525.96.34.721.520.431.815.211.127.312.221.213.68.816.912.211.229.320.710.715.95.74.29.920.114.945.26.8

    12.33.23.938.032.822.1

    28.642.212.24.78.023.548.612.87.113.633.238.98.45.919.728.032.512.17.718.414.024.619.113.110.89.513.330.826.013.47.05.33.613.424.421.831.55.5

    25.726.435.16.86.017.027.840.19.75.416.631.235.710.36.223.238.326.96.25.418.722.934.213.810.420.410.423.216.211.018.810.611.327.923.912.713.64.83.511.023.317.140.35.3

    18.37.06.033.823.929.3

    27.439.17.47.819.232.933.29.15.627.838.223.45.05.623.421.829.413.312.124.111.923.315.39.316.111.014.127.722.910.214.15.16.913.527.112.534.96.4

    14.24.78.033.630.822.9

    32.639.410.33.514.032.539.99.34.321.239.129.46.24.115.526.835.013.09.718.79.923.416.49.222.49.710.326.622.814.216.43.01.310.122.018.145.52.4

    18.66.56.537.524.425.1

    23.541.611.35.016.728.433.912.48.621.037.427.77.46.517.620.137.715.19.518.79.723.116.714.217.611.09.929.026.013.510.66.32.79.521.220.340.07.0

    21.828.437.7

    15.26.55.6

    26.442.710.05.715.432.436.49.56.321.838.127.96.16.115.625.237.212.39.712.98.525.519.113.320.78.811.226.627.814.710.93.92.711.927.019.834.73.62.4

    5.66.8 5.23.42.9 2.9

    7.0 4.9 3.84.4 2.3 2.2

    4.719.124.5 20.9 26.4 18.4 18.522.914.324.9 17.3 14.9 18.2 18.520.650.835.4 48.4 40.9 53.8 50.045.8

    2

    vol.19-3

  • 99

    2

    1980 1999

    2

    3

    9.08.120.9

    27.914.020.1

    13.59.927.123.89.316.410.27.518.523.914.525.427.317.622.712.38.911.211.77.011.919.714.435.322.012.820.616.711.016.929.117.726.613.712.924.417.932.713.311.722.5

    8.5

    14.421.624.922.28.78.2

    10.214.033.920.913.77.36.06.918.427.821.119.823.718.325.414.111.17.47.78.515.624.621.022.619.214.823.819.513.39.425.019.430.914.210.521.424.032.312.49.919.1

    8.97.521.821.816.024.012.59.730.123.010.813.98.87.819.924.015.224.325.016.625.913.98.410.210.17.413.321.915.531.817.210.921.921.012.816.225.919.428.514.212.023.120.134.512.210.125.0

    6.9

    24.013.821.322.09.39.6

    13.613.031.920.28.712.69.910.322.823.911.721.429.218.324.012.65.710.211.811.014.022.913.227.119.314.122.618.512.013.529.017.027.312.514.223.720.532.714.09.122.9

    7.2

    28.117.220.620.46.07.7

    10.38.826.324.613.216.86.46.918.422.516.329.524.515.424.314.89.211.89.37.610.421.513.637.615.710.121.619.113.320.223.118.230.517.111.121.419.336.812.99.627.0

    7.2

    20.316.823.223.17.29.4

    13.77.732.123.910.412.210.26.518.925.517.221.721.816.228.914.210.18.89.44.015.521.419.230.516.99.021.225.112.914.925.622.628.112.910.824.320.534.09.811.425.0

    6.5

    8.76.723.3

    19.618.023.7

    11.69.633.522.212.410.77.38.121.924.115.922.722.715.628.816.07.99.08.37.815.024.316.628.012.18.923.625.714.415.322.820.430.814.911.121.922.636.311.08.227.9032.031.5 33.8 32.6 29.2 39.236.0

    26.5 28.9 28.5 23.029.8 26.7 26.710.57.6 8.4 8.1 6.311.2 4.4

    8.4 5.0

    vol.19-3

  • 2

    100

    1980 1999

    SQ.

    4

    3

    15.813.329.219.422.341.227.417.06.48.035.114.619.510.919.920.016.827.316.319.636.828.120.56.77.952.147.9

    2.421.942.817.411.93.71.80.574.7

    25.3

    35.533.217.46.67.3

    12.820.534.417.215.1

    26.818.519.313.422.015.926.630.014.413.137.828.818.57.47.561.039.012.134.728.915.05.22.31.873.926.1

    15.816.332.018.017.938.929.517.56.87.331.115.821.711.919.520.420.326.315.117.941.227.718.16.96.153.047.0

    2.422.139.719.212.64.61.50.370.429.6

    42.625.816.47.47.8

    16.418.033.616.415.6

    28.414.625.010.121.922.320.727.812.916.343.222.819.07.57.555.444.6

    2.226.945.717.86.61.51.00.567.832.2

    38.130.116.76.48.7

    14.414.031.519.520.6

    32.113.920.514.419.119.618.524.817.319.840.829.616.76.96.053.246.8

    2.419.941.921.112.63.70.80.071.728.3

    36.332.319.26.65.6

    16.716.831.217.917.4

    32.518.819.911.117.719.421.726.215.117.639.530.418.86.35.050.749.3

    2.720.733.118.517.07.72.60.471.228.8

    16.119.335.216.512.936.631.818.07.26.426.617.524.112.918.920.824.425.313.815.746.127.215.66.84.353.746.3

    2.522.336.421.413.35.41.20.065.534.5

    vol.19-3