2006

4.6

1983

6.2

1998

3.3

1994

6.8

0.0

1991

7.1

2002

6.4

2003

6.6

1995

7.1

1998

6.2

2006

6.0

2004

6.8

1992

7.0

1989

6.6

1971

7.1

1997

6.7

1963

8.4

2004

6.9

1993

4.5

1972

6.2