Year	Percent
1995	56.99
1996	58.77
1997	61.35
1998	54.81
1999	59.68
2000	59.68
2001	66.97
2002	68.42
2003	63.59
2004	63.31
2005	59.31
2006	56.99
2007	57.49
2008	54.47
2009	48.01
2010	46.95