Year	Percent
1995	45
1996	44.29
1997	42.08
1998	44.23
1999	46
2000	44.2
2001	49.25
2002	44.19
2003	47.75
2004	47.68
2005	49.69
2006	50.22
2007	51
2008	51.7
2009	53.8
2010	49.5