1975

6.3

1986

5.5

1989

6.9

1981

5.6

1978

4.5

1975

6.6

1977

7.2

1994

8.3

1987

4.5

1986

0.0

1993

8.1

1987

6.5

1978

5.7

1974

5.8

1977

4.5

1976

7.1

1976

5.6