Year	Percent
2000	95.44887
2001	95.60567
2002	95.7631
2003	95.92119
2004	96.07992
2005	96.23933
2006	96.39941
2007	96.56015
2008	96.7216
2009	96.88374
2010	97.04658
2011	97.21013
2012	97.3744
2013	97.53938
2014	97.70511
2015	97.71086
2016	97.71664
2017	97.72245
2018	97.72831