1993

2.0

1992

5.2

2003

0.0

2004

7.9

2000

6.6

2014

4.2

2015

6.7

2014

7.4

2017

0.0

1995

7.0

2010

0.0

2014

4.6

1998

6.1

2016

5.9

2009

7.0

2001

9.0

2013

4.5