2010

7.7

2007

6.9

2005

7.2

2013

7.6

2006

6.9

2006

5.5

2004

7.3

2010

6.9

2004

7.3

1992

6.2

1966

6.3

2010

7.2

2018

4.5

2009

5.7

2002

5.4

2009

7.3

2008

7.3

2013

6.9

2007

6.3

2016

5.2