2005

6.8

2012

7.3

2017

6.5

2000

6.4

2004

6.7

2010

6.8

1943

6.9

1947

6.7

1960

6.3

2010

7.6

2003

7.2

2011

3.0

1967

7.3

2000

6.7

1943

6.2

1945

5.7

1940

6.6

1943

6.6

1946

5.9

1942

4.2