1995

3.9

1963

7.0

2005

5.9

1988

4.1

2014

6.6

1988

6.8

1977

5.8

1992

5.6

1994

7.0

1942

7.4

1992

6.3

2009

6.5

2006

7.6

2008

0.0

2008

5.3

2007

5.0

2000

6.4

2008

6.9

2009

10.0

1930

3.5