1959

5.1

1962

6.6

1960

4.3

1956

7.0

1942

6.7

1930

5.7

1939

6.4

1963

5.9

1943

6.8

1934

6.5

1941

6.2

1949

5.7

1947

6.0

1940

6.7

1962

5.2

1938

6.5

1938

6.8

1938

6.5

1934

6.0

1956

4.6