2013

6.1

2021

10.0

1999

6.6

2014

6.0

2017

5.9

5.3

2012

7.2

2012

6.5

2015

6.9

2011

5.6

2007

5.7

2003

6.2

2006

5.5

2013

6.6

2007

5.7

2021

5.6

2020

5.8

2009

5.3

1993

5.5

2006

5.5