2004

6.4

2010

0.0

1992

6.2

1932

6.0

2008

7.0

1977

6.6

2001

7.1

1999

6.9

2004

4.8

1997

6.1

1947

6.5

2004

7.2

1995

8.0

1939

7.5

1951

6.5

2000

7.0

2001

6.6

1954

5.9

2008

5.7

2009

7.1