Year	Percent
1995	89.57
1996	89.85
1997	90.04
1998	89.85
1999	90.5
2000	90.1
2001	89.62
2002	88.14
2003	89.45
2004	90.25
2005	93.46
2006	92.77
2007	95
2008	95.28
2009	92.72
2010	91.47