2003

7.8

1983

6.3

1976

7.2

2007

5.9

1936

6.2

2010

6.0

1988

7.3

1918

7.3

1939

6.3

2001

5.6

2006

4.7

1969

3.1

1939

6.7

1930

5.0

2008

5.4

1928

7.9

2015

6.8

2006

5.4

2004

5.8

2020

6.6