2004

8.5

2005

6.7

1976

6.8

2002

6.8

1992

6.5

2001

6.6

1994

10.0

1965

7.8

2006

5.3

1994

8.4

1985

7.5

2001

6.3

2006

8.5

1964

8.0

2004

6.6

2001

6.5

1995

0.0

1984

7.0

1993

8.3

1992

7.0