2006

9.3

2001

7.6

2008

7.2

2006

8.0

2000

6.9

2012

6.3

2003

8.2

2006

7.4

2012

7.4

1973

6.8

1984

7.2

2015

6.4

1987

8.4

2005

8.5

1997

7.1

1974

7.7

2005

6.8

2002

7.3

1966

7.6

2012

7.7