Year	Percent
1995	92.81
1996	92.21
1997	92.8
1998	92.88
1999	93.17
2000	94.57
2001	95.87
2002	95.81
2003	91.97
2004	91.67
2005	94.09
2006	92.75
2007	92.4
2008	91.16
2009	93.53
2010	93.39