Year	% of enrollment
1999	14.24853
2000	14.51951
2001	14.5162
2003	13.40412
2004	13.03984
2005	12.90823
2006	12.66093
2007	12.52457
2008	11.51287
2009	11.29415
2010	10.71795
2011	9.97116
2012	10.46917
2013	9.83395
2014	8.8826
2015	8.95299
2016	8.79751
2017	8.82319
2018	8.66165