1983

7.2

1988

5.0

2004

7.6

1930

7.2

1953

6.9

1980

6.7

2005

4.5

2000

0.0

2000

6.7

1975

5.7

1976

6.0

1992

2.9

1930

6.8

2006

2.0

1965

4.7

2017

1.0

2008

5.8

1989

6.4

2007

5.8

2004

3.4