Year	% of total enrollment
1979	13.62736
2005	5.05568
2007	3.19786
2008	3.31031
2011	1.98406
2012	1.43627
2013	1.38265
2014	0.96491
2015	1.17897
2016	1.22627
2017	1.37092
2018	1.22919