1988 6.6

1988 6.5

1988 7.4

1988 6.8

1988 5.5

1988 7.5

1988 6.6

1988 5.7

1988 6.1

1988 5.5

1988 5.8

1988 6.0

1988 5.7

1988 7.4

1988 7.1

1988 6.3

1988 5.6

1988 6.9

1987 5.4

1987 6.6