Year	% of total enrollment
1970	16.55145
1971	16.6874
1972	16.32004
1973	16.1577
1974	16.59651
1975	16.22338
1976	16.27068
1977	16.0846
1978	15.67882
1979	15.22889
1980	14.50843
1981	14.18349
1982	14.79817
1983	14.93021
1984	14.64801
1985	14.51243
1986	14.23743
1987	14.14596
1988	14.15011
1989	14.01601
1990	13.73924
1991	13.25246
1992	12.31456
1993	11.8049
1994	13.25633
1995	13.0729
1996	12.3299
1997	12.25353
1998	12.1926
1999	11.68262
2000	11.64072
2001	11.445
2002	11.43151
2003	10.98154
2004	10.80786
2005	10.50366
2006	10.44238
2007	10.89266
2008	10.81559
2009	10.88368
2010	10.69129
2011	10.50918
2012	10.58317
2013	10.39255
2014	9.68887
2015	9.36478
2016	9.33134
2017	9.21454
2018	9.20595