Year	Percent
1995	75.25
1996	69.68
1997	66.53
1998	68.75
1999	74.66
2000	83.81
2001	83.85
2002	63.9
2003	76.94
2004	84.34
2005	84.07
2006	84.62
2007	83.84
2008	84.7
2009	89.41
2010	89.97