Year	% of total enrollment
1971	33.89641
1972	31.60795
1976	28.81081
1978	27.79995
1979	29.80655
1980	30.86612
1981	35.50124
1982	36.77831
1983	34.88094
1984	35.82435
1985	36.56334
1986	34.82753
1987	34.70917
1988	30.90614
1989	37.08947
1990	33.61171
1991	35.77737
1992	37.02287
1994	45.95537
1995	33.07909
1996	24.21692
1999	31.16567
2000	26.95244
2001	24.00553
2002	22.47369
2003	23.6758
2004	23.83601
2005	22.92278
2006	23.79082
2007	23.73071
2008	22.84332
2009	22.36464
2010	22.12897
2011	21.54467
2012	19.98708
2013	17.92848
2014	11.19977
2015	8.8242
2016	7.90809
2017	7.72607
2018	7.56026