2017

6.1

2008

8.9

2010

8.1

2016

8.6

2013

8.5

2013

8.7

2021

7.6

2014

7.8

2019

8.7

2011

8.5

2007

7.9

2005

8.2

2018

8.0

1994

8.4

2016

8.4

2021

8.2

2004

8.6

2003

7.5

2009

7.9

1989

8.0