1980

4.8

2005

0.0

1955

2.4

2008

6.5

1933

6.6

2007

3.2

2003

5.2

1959

5.4

1992

4.7

1991

10.0

1981

6.4

2004

5.8

2005

4.9

2004

5.6

2005

6.8

2002

6.9

2006

7.2

1985

7.5

1909

3.9

1990

5.9