1976

7.1

1976

0.0

1971

6.5

1974

5.8

1972

7.1

1955

6.6

1951

8.6

1967

6.8

1978

6.1

1975

5.0

1978

5.0

1949

5.3

1975

6.0

1965

4.3

1971

6.3

1957

7.7

1974

6.3

1972

7.4

1975

6.7

1972

7.5

1960

6.3

1958

6.2

1959

5.8

1970

7.5

1948

6.3

1972

6.8