1967

7.0

1983

6.2

1989

6.0

1988

6.7

1978

6.3

1962

5.0

1981

6.6

1961

8.0

1964

7.0

1984

8.0

1987

4.0

1976

3.7

1976

6.2

1962

10.0

1960

7.4

1960

8.0

1987

7.8

1968

8.2

1985

7.7

1965

7.5

1979

4.5

1977

6.3