2014

6.1

2008

5.5

2016

7.1

2004

6.2

2004

6.1

1938

7.3

2001

5.5

2008

5.4

1992

7.2

2006

6.6

2009

4.8

1960

6.1

2000

6.3

1942

6.9

1937

6.5

1940

7.2

2014

5.8

1997

6.4

2001

5.9

1995

7.0