Year	% of enrollment
1971	13.08406
1972	12.32481
1973	11.838
1974	11.14095
1975	10.91246
1976	11.16403
1977	11.04096
1978	10.75117
1979	10.49409
1980	10.18537
1981	9.89719
1982	10.17485
1983	10.46072
1986	11.15302
1987	11.45067
1988	11.40665
1989	11.60147
1990	11.6476
1991	11.77093
1992	12.05237
1993	12.71474
1994	12.64853
1995	12.80871
1996	12.28565
1997	12.02659
1998	1.63848
1999	1.59912
2000	1.53346
2001	1.50377
2002	1.41654
2003	1.38265
2004	1.37407
2005	1.29763
2006	1.2418
2007	1.15124
2008	0.6385
2009	0.64069
2010	0.56359
2011	0.61646
2012	0.59087
2013	0.58264
2014	0.55753
2015	0.5774
2016	0.54843
2017	0.55405