2017

8.0

2021

7.1

1999

6.8

2010

7.1

2009

6.6

2011

6.5

2014

7.5

2005

6.2

2004

4.7

2013

6.4

2018

6.9

2017

6.2

2010

7.4

2007

6.9

2010

7.4

2008

5.8

1992

6.3

2002

6.1

2014

7.0