Year	Percent
1995	7.22
1996	7.339
1997	7.614
1998	7.68
1999	7.742
2000	8.015
2001	8.166
2002	8.295
2003	8.305
2004	8.615
2005	8.897
2006	8.971
2007	8.638
2008	9.003
2009	9.431
2010	9.529