Year	Percent
1995	7.991
1996	9.335
1997	9.431
1998	8.223
1999	8.27
2000	7.925
2002	11.11
2003	12.48
2004	15.06
2005	12.87
2006	15.61
2007	16.14
2008	16.51
2009	17.45
2010	17.43