2008

3.9

2007

5.3

2004

6.8

2007

6.7

2006

6.6

1997

0.0

2005

5.9

1985

7.2

1937

5.7

1953

6.9

1993

7.0

2004

7.2

2003

7.1

1988

7.1

2017

0.0

1950

5.3

2004

6.4

2018

5.3

1983

6.8

2007

6.4