1955

5.6

1956

6.6

1939

5.3

1959

7.5

1950

6.1

1962

4.8

1947

6.5

1974

6.1

1943

6.1

1943

6.6

1950

7.4

1980

5.3

1956

5.3

1949

6.9

1951

7.9

1937

7.0

1967

5.3

1950

6.8

1951

7.1

1984

4.8

1964

7.3

1957

5.0

1946

7.8

1949

6.2

1957

6.2

1979

7.1

1973

5.9

1969

5.5

1958

7.2

1977

6.3

1957

6.2

1976

7.0

1955

5.9

1967

6.3

1950

5.2

1956

5.6

1953

6.1

1957

6.4