1991 5.0

1991 6.8

1991 6.7

1991 6.9

1991 6.5

1991 5.7

1991 3.9

1990 6.4

1990 4.7

1990 7.4

1990 6.9

1990 5.9

1990 5.4

1990 6.5

1990 6.1

1990 5.7

1990 4.9

1990 6.6

1989 5.9

1989 4.6