Year	Percent
1995	94.78
1996	88.33
1997	81.28
1998	81.65
1999	81.74
2000	82.51
2001	72.27
2002	71.19
2003	77.06
2004	77.4
2005	76.83
2006	72.22
2007	70.8
2008	64.24
2009	66.55
2010	68.34