2004

4.5

2005

4.8

2002

0.0

2000

3.7

1999

3.8

2012

6.3

1998

8.8

2010

7.5

2002

6.3

2006

6.9

1997

7.1

2003

5.0

2011

7.5

2005

5.0

2002

7.2