Year	Percent
2000	92.94886
2001	91.83973
2002	92.45909
2003	92.8665
2004	92.3242
2005	92.67652
2006	93.42351
2007	93.91089
2008	93.4743
2009	93.08349
2010	92.61132
2011	93.17278
2012	93.38527
2013	93.15132
2014	92.76116
2015	93.05489
2016	92.76754
2017	92.68749