2008

4.8

1972

7.7

1997

6.6

1973

7.2

2006

5.2

1978

6.9

1943

7.0

2012

6.2

1921

7.6

1992

8.9

2003

6.5

1955

6.9

1976

6.9

2007

9.8

2020

7.4

1965

7.4

1930

6.8

2009

4.1

1971

6.9

2009

7.1