Year	% of enrollment
1999	13.27388
2007	13.45339
2008	12.61864
2009	12.12502
2010	12.19535
2011	11.90118
2012	11.18696
2013	10.91865
2014	10.68931
2015	10.29121
2016	10.36963
2017	10.48648