2004

8.6

2024

9.0

2008

8.9

1998

7.0

5.8

2005

8.6

1990

7.0

1998

7.5

1996

7.7

1980

7.3

2002

6.9

1988

7.7

1990

7.8

1977

7.3

1961

7.5

2002

8.2

1985

8.5

2004

8.3

1997

7.7

1989

8.0