Year	% of total enrollment
1971	12.38537
1972	13.91618
1973	11.7707
1974	13.0486
1975	10.8371
1976	11.39691
1977	11.21283
1978	12.63275
1979	13.16179
1980	10.96869
1981	9.65509
1982	9.65612
1983	8.90882
1984	8.62747
1985	8.46265
1987	6.73102
1988	6.16902
1994	4.76089
1995	4.45264
1996	4.00904
1997	3.45191
1999	2.70818
2000	2.37268
2001	2.2228
2002	2.04879
2003	2.02514
2004	2.02517
2005	1.6447
2006	1.50651
2007	1.40469
2009	2.76904
2010	2.17085
2011	2.22252
2012	1.74325
2013	2.07134
2014	1.16727
2015	0.82549
2016	0.70422
2017	0.68022
2018	0.47051