1984

7.6

2014

8.0

2019

8.1

2010

8.4

2000

8.2

2012

6.6

2016

7.6

2021

6.8

2017

7.4

2009

7.3

2014

7.6

2019

7.0

2005

7.1

2017

7.6

2013

8.0

2013

6.3

2004

7.5

2009

7.6

2018

7.5

2008

7.6