1977

5.5

1989

4.3

1976

7.4

2017

5.4

1981

8.2

1976

6.0

1988

0.0

1975

7.5

2004

5.8

1977

7.0

1985

2.5

1974

0.0

1986

5.5

1979

6.6

1978

6.7