Year	Percent
1995	8.991
1996	9.266
1997	9.896
1998	9.331
1999	8.588
2000	8.432
2001	10.1
2002	9.886
2003	9.386
2004	8.968
2005	14.78
2006	16.08
2007	11.48
2008	11.91
2009	11.13
2010	11.13