2010

8.5

2016

7.3

2007

7.9

2014

7.8

2011

7.0

2008

5.3

2005

7.5

2019

8.0

2016

6.9

2012

6.8

2015

7.4

2010

7.4

2017

8.2

2003

7.8

2013

8.2

1992

8.5

2017

7.1

2013

7.2

2001

8.6

2013

7.8