2008

3.8

1986

7.0

2005

6.2

2003

5.7

2001

6.8

2000

6.2

2004

6.7

1965

6.2

1931

6.9

1994

5.4

2008

5.6

1962

6.4

1955

7.3

2006

5.6

1947

7.3

2012

0.0

2005

6.0

1959

5.9

2001

3.9

2024

0.0