2005

6.6

2007

7.0

1965

7.5

1997

7.0

2006

6.0

2000

6.7

1953

5.5

2006

6.6

2008

6.2

1969

7.1

2016

0.0

1970

6.6

1945

6.9

1932

6.1

2010

7.4

1921

6.6

1940

6.0

2007

7.6

1943

5.4

2010

5.7