1936

5.3

1949

7.2

1955

7.7

1950

5.9

1944

8.1

1952

6.1

1939

7.0

1942

4.0

1938

5.7

1933

3.5

1955

6.4

1953

5.2

1937

5.4

1954

4.2

1942

6.0

1951

4.5