2004

7.0

1999

7.2

2006

6.1

2006

7.2

2007

5.4

1999

7.8

2004

7.8

2001

5.4

1980

6.6

1982

6.4

1932

7.4

2018

6.6

1993

7.4

1981

3.0

2003

6.7

2004

4.8

1954

5.9

2008

5.8

1964

7.5

2009

7.1