2005

7.5

1959

7.8

2005

7.4

2005

7.8

1963

8.1

2001

6.8

1975

7.3

1997

7.0

2002

6.6

2006

6.2

1966

7.7

1985

5.0

2003

5.1

2003

6.3

2002

6.7

2004

6.9

2003

7.2

1958

7.6

1981

6.4

1967

7.3