2000

7.3

1984

3.5

1963

7.6

2013

7.5

1976

7.8

1991

7.4

2016

7.0

2016

8.5

2007

6.2

1992

6.3

1983

7.8

1975

8.0

1924

7.4

2006

7.4

2002

7.3

2005

5.6

2001

5.9

2007

6.7

2007

6.2

2002

6.2