1950

6.9

1951

6.3

1932

6.1

1944

6.1

1955

6.1

1949

6.9

1976

5.0

1931

6.4

1947

7.3

1954

6.9

1939

5.9

1948

6.2

2011

6.0

1946

5.8

1951

5.8

1949

6.1

1947

6.1

1927

7.2

1952

7.9

1923

6.7