2002

7.7

2009

7.4

2004

8.4

1967

7.5

1998

8.5

1998

5.9

2001

5.0

1980

7.5

1985

6.8

1991

7.3

1993

6.3

1968

6.7

2007

5.7

1976

6.7

2005

0.0

1988

7.0

1983

6.3

1991

6.0

1966

8.5

2004

7.2