Year	% of enrollment
1970	16.03898
1972	14.77107
1973	14.4172
1975	13.26327
1976	13.14185
1977	12.81865
1978	12.64012
1979	12.40758
1980	12.02406
1981	11.78778
1982	12.15861
1983	12.14492
1984	11.86288
1985	11.09421
1986	10.20413
1987	9.30742
1988	8.5907
1989	7.93482
1990	7.43019
1991	7.19365
1992	7.37039
1993	7.71257
1994	18.03592
1995	19.4251
1996	18.36919
1999	18.47341
2000	18.01255
2001	17.55164
2002	18.20807
2003	15.90707
2004	15.3759
2005	14.661
2006	14.10772
2007	14.07568
2008	13.98123
2009	13.8387
2010	13.68441
2011	12.87399
2012	15.79579
2016	13.94173