Year	% of total enrollment
1970	13.65062
1971	13.49497
1972	13.33026
1973	13.27972
1974	13.03442
1975	12.56415
1976	12.67858
1977	12.33675
1978	11.22845
1979	11.1554
1980	11.45512
1981	11.33463
1982	11.6411
1983	11.72761
1984	11.65898
1985	11.77735
1986	12.33269
1987	12.66799
1988	12.84822
1989	12.78169
1990	12.28222
1991	12.1068
1992	11.19053
1993	10.82236
1994	11.68438
1995	11.75473
1996	11.59259
1997	11.35326
1998	11.20048
1999	10.67629
2000	10.51856
2001	10.61093
2002	10.5321
2003	10.54179
2004	10.49682
2005	9.74841
2006	9.6678
2007	9.79316
2008	9.50055
2009	9.62835
2010	9.2013
2011	8.77464
2012	8.8309
2013	8.72776
2014	8.27788
2015	8.06565
2016	7.97416
2017	7.94932
2018	7.89592