2005

8.4

2013

7.7

2010

7.5

2017

7.4

2014

7.8

2015

8.3

2019

7.7

2008

7.6

2018

7.1

1995

6.4

2008

7.1

2022

7.4

2017

8.1

2002

7.2

2006

7.9

2013

8.0

1996

7.8

2014

8.3

2016

7.3

2017

6.4