1983 7.9

1983 6.1

1982 7.1

1982 5.8

1982 5.5

1982 7.4

1982 6.2

1982 6.3

1982 6.6

1982 7.1

1982 7.8

1982 6.5

1982 5.5

1982 7.5

1982 7.2

1982 6.6

1981 6.9

1981 7.3

1981 6.9

1981 5.1