Year	% of enrollment
1971	28.15995
1972	27.77904
1973	28.27782
1974	27.52756
1975	25.98658
1976	26.88544
1977	25.4738
1978	26.04369
1979	25.96968
1980	24.30556
1981	22.60015
1982	23.10844
1983	20.18838
1984	17.62016
1985	15.68221
1986	12.48735
1987	12.40254
1988	10.62454
1989	10.19959
1991	8.08745
1992	7.97523
1993	6.57203
1994	6.09817
1995	5.72799
1996	4.9858
1997	5.08809
1998	5.23914
1999	4.95269
2000	5.59187
2001	5.27409
2002	5.05447
2003	4.886
2004	4.49775
2005	4.38901
2006	5.93952
2011	2.8526
2012	2.69461
2013	3.2878
2014	3.08075
2015	2.51678
2016	2.92657
2017	2.80603
2018	2.66513