2004

4.6

2001

5.4

2000

4.9

2008

5.3

2007

3.8

2002

3.0

1998

6.0

2000

6.0

2015

0.0

2009

9.0

1999

2.9

2005

6.1

1999

8.0

2003

4.0

2006

6.8

2000

5.0

2010

0.0