Year	Percent
2000	63.96618
2001	65.0517
2002	66.13723
2003	67.22276
2004	68.30828
2005	69.39381
2006	70.47933
2007	71.56486
2008	72.65038
2009	73.73591
2010	74.82143
2011	75.90696
2012	76.99248
2013	78.07801
2014	78.07801
2015	78.07801
2016	78.07801
2017	78.07801