Year	% of total enrollment
1974	9.80991
1975	10.12561
1976	10.44013
1977	11.19126
1978	11.41257
1979	11.52526
1980	12.01863
1981	11.9393
1982	12.19677
1983	12.41239
1984	12.64539
1985	12.70775
1986	13.10736
1987	13.58214
1988	13.06521
1989	13.04194
1990	12.83302
1991	12.99342
1992	12.78975
1993	12.61891
1994	12.63846
1995	12.41871
1996	11.73666
1997	11.50346
1998	11.21211
1999	11.21362
2000	11.29665
2001	11.41497
2002	11.39157
2003	11.44712
2004	11.22875
2005	11.51629
2006	11.6732
2007	11.77638
2008	11.75442
2009	11.47735
2010	11.16743
2011	11.1141
2012	10.54488
2013	10.34791
2014	10.0338
2015	10.11118
2016	10.26548
2017	10.22239
2018	9.85271