Year	% of total enrollment
1971	18.84448
1972	17.43618
1973	19.07698
1974	20.61091
1975	17.60466
1976	21.2298
1977	21.69426
1978	20.91892
1979	18.47688
1980	23.22106
1981	19.57697
1982	18.15918
1983	22.46622
1984	28.51511
1985	25.91956
1986	26.85275
1987	26.1471
1988	26.18223
1989	26.23313
1990	24.56464
1991	21.48353
1992	23.12111
1993	23.8831
1994	24.655
1995	24.45744
1996	25.10534
1997	25.15419
1998	23.73456
2000	19.91026
2001	19.8758
2002	21.58297
2003	19.92558
2004	23.07487
2005	16.78471
2008	14.30238
2010	13.38815
2011	10.8313
2012	11.60815
2013	11.22144
2014	10.84061
2015	10.73499
2016	9.91598
2018	15.11129