Year	Percent
1991	76.9
1995	79
1998	79
1999	83.8
2000	100
2002	97
2004	87.8
2005	89.3
2006	95.8
2007	94.6
2008	94.9
2009	93.5
2010	94
2011	96.2
2013	94.2
2016	96.8