Year	Percent
1995	10.4
1996	10.17
1997	11.16
1998	7.811
1999	9.148
2000	8.743
2001	7.194
2002	5.754
2003	5.901
2004	5.546
2005	10.78
2006	8.79
2007	11.03
2008	12.58
2009	13
2010	12.08