Year	Percent
2000	90.07934
2001	90.48839
2002	90.89882
2003	91.31066
2004	91.72393
2005	92.13864
2006	92.55475
2007	92.9723
2008	93.39128
2009	93.8117
2010	94.23357
2011	94.65687
2012	95.07448
2013	95.47877
2014	95.47363
2015	95.46851
2016	95.46355
2017	95.45876