1978 6.8

1978 5.7

1978 6.2

1978 6.9

1978 4.3

1978 7.7

1977 7.3

1977 5.0

1977 7.2

1977 5.2

1977 5.1

1977 6.3

1977 5.8

1977 6.2

1976 5.8

1976 7.4

1976 7.5

1976 6.0

1975 8.1

1974 7.4