2004

6.3

2006

6.7

2007

5.8

2006

6.6

2005

0.0

2008

4.0

1945

0.0

1928

7.6

2006

5.8

1968

6.0

2002

6.2

1996

7.0

1997

7.5

2001

6.8

1953

7.1

1980

6.1

2002

1.9

1973

2.0

1982

4.8

1969

6.8