2007

7.3

2002

7.4

2005

7.1

1963

0.0

1989

6.5

2006

6.6

2008

6.6

2006

6.5

2009

6.8

1977

6.7

1995

6.5

1996

5.9

1996

6.6

2003

5.3

2003

7.2

1990

6.9

2006

6.2

1974

0.0

1970

6.9

1971

6.7