2005

6.1

2015

6.2

2015

7.3

2014

7.1

2007

6.7

2002

6.0

2011

5.7

2013

5.9

2006

7.8

2016

7.0

2012

6.3

2020

6.4

2006

5.8

2010

6.2

2016

7.9

2006

6.4

2017

7.4

2011

5.7

1996

6.6

1993

5.5