2009

4.7

2008

5.1

2016

5.7

2016

5.6

2014

7.1

2017

6.8

2001

6.8

1992

5.0

2006

6.5

2010

5.8

1999

7.4

2012

5.5

2018

5.3

2022

7.1

2014

7.7

2011

4.6

1997

4.5

2018

7.0

2015

6.5