2005

6.5

1997

5.7

2006

6.5

2007

6.8

1993

6.1

1984

4.0

1932

7.4

2000

6.9

1975

7.8

2002

7.2

1971

6.4

1997

7.5

2022

8.0

2005

7.0

1983

5.9

2008

6.6

2003

5.9

2004

7.2

1988

7.7

2005

7.2