2012

6.0

2004

10.0

2011

6.0

2006

6.9

2003

7.1

2007

5.9

2001

5.6

2007

7.7

1965

6.3

2006

5.6

2004

6.1

2005

6.2

2005

7.7

2007

6.7

1995

6.7

2001

7.8

1981

9.0

2000

8.0

1987

8.2

2004

8.0