Year	Percent
1995	83.83477
1996	84.76494
1997	85.55979
1998	86.52493
1999	87.57764
2001	91.10445
2002	91.36951
2003	91.47959
2004	92.0731
2005	92.10591
2006	92.52071
2007	93.0505
2009	93.63938
2010	93.68819
2015	91.53855
2016	93.82787