2001

6.1

2007

6.7

2006

7.2

2004

7.9

2000

8.2

2000

8.2

1994

8.3

1932

7.8

2000

7.4

1982

6.7

1995

6.5

1954

7.9

2000

6.0

1975

7.3

1982

7.5

2005

6.3

1974

8.6

1990

7.4

2003

7.2

1987

4.1