Year	Percent
2000	76.40468
2001	77.78626
2002	79.16784
2003	80.54943
2004	81.93101
2005	83.31259
2006	84.69417
2007	86.07575
2008	87.45733
2009	88.83892
2010	90.2205
2011	91.60208
2012	92.98366
2013	92.98366
2014	92.98366
2015	92.98366
2016	92.98366