1990 7.2

1990 7.5

1990 7.1

1990 6.7

1989 6.5

1989 7.5

1989 7.1

1989 6.5

1989 7.8

1989 6.8

1988 7.0

1988 7.5

1988 6.1

1988 6.1

1988 7.2

1987 7.9

1987 6.7

1987 7.7

1987 7.7

1987 7.8