1995

6.9

2008

7.4

1977

6.4

2005

7.3

2025

0.0

2007

3.3

2000

5.9

2001

7.5

2004

6.6

1958

7.0

2007

5.8

2008

5.6

2006

6.4

2006

7.8

1997

6.0

1959

3.8

1975

7.0

1974

7.3

2006

6.6

1995

6.1