Year	% of enrollment
1971	20.72412
1972	19.6491
1973	17.7289
1974	16.05514
1975	12.50907
1976	10.95059
1977	12.95078
1978	12.59446
1979	13.07654
1980	12.9931
1981	13.13855
1982	10.9109
1983	10.10299
1984	9.07112
1985	8.13589
1986	9.65508
1987	10.19492
1988	10.40641
1989	10.00381
1990	10.17398
1991	10.10868
1992	7.2812
1993	7.03336
1994	8.29045
1995	6.94987
1996	6.43268
1997	6.82422
2011	0.80997
2012	0.7171
2013	0.69753
2014	0.91392
2015	0.85283
2016	0.91353
2017	0.85672