1992

5.8

1995

6.7

1943

6.9

1993

6.3

2008

6.3

2003

6.3

2009

6.3

1983

5.7

2006

4.5

2005

7.2

2007

4.2

2008

3.4

2009

3.5

1995

4.0

1985

6.9