Year	Percent
1995	93.4909
1996	94.38988
1997	94.45792
1998	94.40335
1999	94.87165
2000	94.93954
2001	94.50249
2002	94.60133
2003	94.35144
2004	94.26905
2005	94.19256
2006	93.24267
2007	93.5975
2008	93.63216
2009	93.45591
2010	93.77324
2011	94.20939
2012	94.19965
2013	94.09886
2014	93.89408
2015	93.97093
2016	94.03267
2017	94.36024