1985

6.1

2013

6.7

2004

6.0

2015

6.3

2021

9.3

2011

6.3

2011

7.2

2015

6.8

2019

7.7

2014

6.9

2012

5.0

2022

7.8

2010

6.3

2013

6.1

2017

7.3

2006

6.5

2008

6.3

2011

6.7

2014

5.8

2014

5.6