2011

6.5

2005

8.2

2006

7.1

2007

8.0

2016

8.4

2009

7.9

2007

7.1

2017

8.1

2014

4.8

2010

6.2

2013

7.5

2015

6.7

2023

6.1

2008

7.6

2002

7.2