1981

6.4

1933

6.6

1959

5.4

2014

6.0

1980

6.3

1969

6.4

1948

6.8

1947

6.9

1947

6.9

1946

7.4

1942

6.8

1945

7.2

1946

7.0

1943

7.0

1945

7.2

2002

6.9

1971

4.5

1892

4.7

1892

3.7

1983

7.6