Year	Percent
1995	6.831
1996	6.844
1997	6.606
1998	6.655
1999	6.89
2000	7.012
2001	7.238
2002	7.561
2003	7.766
2004	7.994
2005	8.239
2006	8.474
2007	8.414
2008	8.855
2009	9.789
2010	9.636