2007

7.0

2010

7.3

2011

7.2

2012

7.7

2005

4.7

2017

4.5

2009

8.2

2017

7.7

2010

7.3

2014

7.3

2003

2.0

2001

0.0

2002

7.0

2013

7.7

1999

0.0