Year	% of total enrollment
1971	29.78745
1972	29.85098
1973	29.30328
1974	29.65347
1975	29.38183
1976	28.0679
1977	28.69587
1978	27.86157
1979	28.16028
1980	28.63448
1981	29.45313
1982	29.00252
1983	29.55858
1984	31.04444
1985	21.72575
1986	19.81589
1987	19.42575
1988	16.7546
1989	15.47269
1990	13.72448
1991	11.07392
1992	12.27329
1993	12.41762
1994	12.27016
1995	11.7477
1996	11.99863
1997	12.33871
1998	12.48595
1999	12.3966
2000	12.34705
2001	12.65122
2002	12.60424
2003	13.66466
2004	13.21754
2005	12.72513
2006	12.56167
2007	11.87753
2008	11.88744
2009	11.43783
2010	10.74587
2011	8.29433
2012	7.28142
2013	9.2297
2014	9.55324
2015	9.32883
2016	9.67611
2017	10.4531
2018	10.12767