1993

5.5

2020

7.0

2007

6.9

1995

6.8

2012

7.3

2008

5.6

2010

5.8

2014

4.4

2014

6.6

2009

6.2

2014

7.6

1998

6.6

2010

7.2

2013

7.9

2015

6.6

2017

4.7

2008

6.9

2009

4.1

2004

6.6