Year	% of total enrollment
1970	15.40345
1971	14.41205
1972	13.52294
1973	12.89499
1974	13.63636
1975	12.60673
1976	10.98798
1977	11.23005
1978	11.40499
1979	12.57032
1980	12.72302
1981	12.42487
1982	12.30059
1983	11.72796
1984	12.35502
1985	13.1489
1986	11.50121
1987	11.39202
1988	11.02369
1989	9.97982
1999	6.36491
2000	5.99538
2001	5.61079
2002	5.40338
2004	5.49162
2005	5.64103
2006	5.62245
2007	5.4938
2008	5.29176
2009	5.17354
2010	5.53797
2011	5.74121
2012	5.08991
2013	4.60579
2014	2.5694
2017	3.18119