2001

3.5

2006

4.9

2002

7.0

2002

5.5

2005

6.0

2014

5.7

1988

5.0

2002

6.0

2001

7.5

1998

5.9

1946

7.5

2003

5.8

2006

5.5

1998

6.6

2002

6.1

1983

5.8

1985

7.5

2007

6.2

1989

6.1

2008

4.9