2005

7.4

1985

7.2

2001

7.9

1963

7.1

2007

6.5

1988

6.7

1943

8.2

2002

6.6

1919

6.2

1930

5.0

1999

7.2

2006

7.2

2007

5.9

2003

7.2

2004

7.8

2001

6.8

2001

6.5

2002

7.6

2006

6.3

1927

5.8