Year	Percent
2000	51.00842
2001	53.84508
2002	56.68174
2003	59.5184
2004	62.35506
2005	65.35975
2006	68.37905
2007	71.41299
2008	74.46154
2009	77.52472
2010	80.60252
2011	83.69494
2012	86.80198
2013	89.92365
2014	92.82611
2015	95.72857
2016	95.72857
2017	95.72857
2018	95.72857
2019	95.72857