Year	Percent
1995	26.8
1996	25.69
1997	24.72
1998	24.42
1999	20.71
2000	22.66
2001	18.83
2002	18.82
2003	10.61
2004	10.61
2005	8.049
2006	8.071
2007	10.22
2008	10.22
2009	13.82
2010	12.55