Year	Percent
1995	11.95
1996	10.69
1997	10.76
1998	8.953
1999	8.448
2000	6.64
2001	8.501
2002	9.094
2003	7.895
2004	8.216
2005	7.94
2006	10.67
2007	8.242
2008	8.681
2009	8.303
2010	10.5