1967

7.3

2000

6.4

2017

6.6

1943

6.9

2004

6.7

1953

6.7

1949

6.8

2012

7.3

2011

3.0

1947

6.7

1960

6.3

2010

7.6

2008

6.8

2003

7.2

1944

5.7

2000

5.9

1942

7.1

1943

6.5

1948

6.6

1945

6.0