Year	% of enrollment
1977	24.2702
1991	29.7063
1992	27.69976
1996	17.63979
1997	16.32877
1999	16.62831
2000	8.04822
2001	5.01964
2002	4.99593
2003	9.02606
2009	18.77439
2013	17.18187
2014	13.31161
2016	10.54454
2017	10.38117
2018	7.97903