2008

5.2

2012

5.7

2012

4.6

2002

3.4

2004

6.0

2016

6.9

2019

7.0

2013

4.9

2011

6.1

1996

2.0

2006

7.5

1993

5.7

2007

6.9

2016

5.7

2005

5.4

2015

5.5

1997

3.0

2017

5.6