1988 5.7

1988 5.5

1988 6.7

1988 3.9

1988 6.4

1988 6.0

1988 6.8

1988 5.7

1987 7.0

1987 6.9

1987 5.8

1987 6.7

1987 6.4

1987 3.8

1987 7.6

1987 6.3

1987 5.9

1987 6.6

1987 6.6

1987 5.6