1969

6.0

1975

5.8

1972

0.0

1981

5.0

1976

0.0

1970

6.0

1967

7.0

1962

8.0

1969

7.0

1961

6.3

1979

6.4

1978

6.1

1970

0.0

1974

5.0

1962

0.0

1954

5.0

1961

6.2

1982

7.6

1972

5.3

1958

5.7

1976

6.5

1962

5.8