2008

4.6

2006

4.7

2019

8.1

2014

8.0

2021

6.8

2017

7.4

2013

7.7

2017

7.6

2014

6.2

2002

7.1

2012

6.6

2018

7.5

2005

7.1

2001

7.9

2010

8.4

2014

7.6

2001

8.4

2016

7.6

2011

6.7

2018

7.6