Year	% of total enrollment
2007	0.61615
2008	0.62184
2009	0.65015
2010	0.52126
2011	0.39004
2012	0.39011
2013	0.42714
2014	0.44846
2015	0.6479
2016	0.7873
2017	0.66293
2018	0.55998