Year	% of total enrollment
1997	11.27215
2005	5.18549
2006	4.66314
2008	4.33074
2009	3.60828
2010	3.8248
2011	3.81085
2012	3.40807
2013	3.20823
2014	2.5676
2015	1.67549
2016	0.30835
2017	0.06619