Year	Percent
1995	51.64
1996	42.43
1997	43.15
1998	53.28
1999	51.25
2000	48.77
2001	48.04
2002	49.72
2003	50.68
2004	48.39
2005	51.2
2006	51.11
2007	49.67
2008	46.03
2009	50.99
2010	47.8