Year	% of enrollment
1970	25.27077
1971	24.23661
1972	24.36864
1973	23.81739
1975	22.52404
1976	22.18686
1978	18.11999
1979	17.03976
1980	15.89822
1981	15.35591
1982	15.55711
1983	15.63588
1984	15.98875
1985	15.23189
1986	15.53973
1987	14.87764
1988	14.88809
1989	14.09085
1990	13.45703
1999	10.3931
2000	9.79026
2001	9.66249
2002	9.37571
2004	9.37541
2005	8.82456
2006	8.399
2007	8.91195
2008	9.46357
2009	10.84455
2010	8.76279
2011	9.31708
2012	8.72262
2013	8.65902
2014	8.44254
2015	8.93796
2017	8.56269