2006

7.2

1982

6.4

1986

7.5

1940

7.9

2002

6.7

1971

7.5

1993

8.5

1964

7.6

2003

7.7

1999

7.5

2006

7.4

2000

7.0

1988

7.5

1932

7.3

1966

7.3

1962

7.3

2001

7.8

1999

5.7

1983

6.8

1919

0.0