Year	% of total enrollment
1972	12.50365
1973	12.57357
1974	12.47261
1975	12.47871
1976	12.53646
1977	12.19899
1978	13.05626
1979	13.01785
1980	12.7638
1981	11.67984
1982	10.15165
1983	6.69596
1984	6.87282
1985	6.82328
1986	7.52581
1987	6.73397
1988	6.5384
1989	6.51986
1990	6.78745
1991	9.20554
1992	8.7603
1993	9.10627
1994	9.07265
1995	8.88583
1996	8.73393
1997	10.48812
1999	11.8866
2000	14.2123
2001	12.52902
2002	11.73434
2003	11.60591
2004	11.76639
2005	11.17537
2006	11.95793
2007	11.04708
2008	7.798
2009	10.84769
2010	7.47223
2011	7.44468
2012	6.84485
2013	6.85062
2014	6.90663
2015	6.22796
2016	5.84601
2017	5.6587
2018	5.50096