2002

4.6

2013

6.8

2005

6.8

2010

7.8

1999

2.0

2016

7.6

2018

0.0

2007

7.2

2013

5.8

2014

5.9

2002

2.5

2015

8.1

2014

6.2

2005

6.1

1998

5.7

2003

6.5

2009

7.7

2006

5.3