Year	% of total enrollment
1972	8.37383
1973	7.35742
1974	7.592
1975	7.84346
1976	9.83384
1977	20.87782
1978	12.57985
1979	8.53988
1980	6.61897
1981	4.04483
1982	1.90076
1983	1.26135
1984	1.12846
2007	0.3454
2008	0.30964
2009	0.39375
2016	0.16249
2017	0.15683