Year	Percent
1995	4.455
1996	4.616
1997	4.594
1998	5.259
1999	4.652
2000	4.221
2001	4.364
2002	4.178
2003	6.339
2004	6.222
2005	6.527
2006	10.77
2007	9.472
2008	9.358
2009	10.09
2010	10.48