2006

7.0

2005

7.4

1994

3.0

1983

8.1

1998

7.2

1991

6.4

1990

7.4

2001

7.5

1991

7.8

1961

5.0

2005

8.0

1966

8.0

2006

5.5

2006

5.0

1969

7.0

2004

8.1

2003

7.7

1986

5.2

2006

0.0

1993

0.0