Year	Percent
2000	87.66693
2001	88.13594
2002	88.60339
2003	89.06956
2004	89.53507
2005	89.99973
2006	90.46379
2007	90.92704
2008	91.38971
2009	91.85163
2010	92.31283
2011	92.77075
2012	93.2268
2013	93.62313
2014	94.02112
2015	94.42041
2016	94.82096