2006

5.2

1963

7.3

2006

6.7

2005

6.2

2003

6.9

2003

7.1

1970

0.0

2001

6.9

2008

4.3

2009

7.8

1995

5.5

1956

7.0

1999

7.9

2010

7.8

2008

6.1

1960

2.5

1998

6.6

1998

4.4

1967

7.3

2002

5.6