Year	% of total enrollment
1970	16.35892
1971	16.31612
1972	16.21618
1973	16.16581
1974	16.2416
1975	15.83624
1976	15.7582
1977	15.27941
1978	15.02921
1979	14.86035
1980	14.81129
1981	14.62017
1982	14.66376
1983	14.35048
1984	13.93859
1985	13.78094
1986	13.62118
1987	13.47959
1988	13.21583
1989	12.92486
1990	12.7654
1991	12.67394
1992	12.16074
1993	12.01285
1994	12.70906
1995	12.78918
1996	12.42127
1997	12.2133
1998	12.24706
1999	12.07088
2000	12.11582
2001	12.11298
2002	11.96532
2003	11.83379
2004	11.89953
2005	11.13688
2006	10.89052
2007	10.88796
2008	10.54377
2009	10.58805
2010	10.17165
2011	9.556
2012	9.51288
2013	9.26382
2014	8.60573
2015	8.27268
2016	8.11773
2017	7.97163
2018	7.84643