2005

9.2

1995

9.6

2007

8.4

1975

8.2

1975

6.0

1966

8.3

1997

8.9

1987

8.3

2024

4.5

1996

8.1

2001

9.0

2006

6.5

1997

7.3

1971

0.0

2005

7.9

2000

8.2

2006

8.1

1958

0.0

1984

9.1

2013

9.2