1933

6.6

1984

6.9

2008

7.7

1941

5.1

1927

5.2

1980

5.5

2006

5.5

2008

6.7

2013

7.2

2002

2.7

2007

5.4

1957

6.7

2007

6.8

1987

5.8

2008

6.7

1917

5.5

1922

6.1

1919

6.3

1979

5.8

2006

6.6