Year	% of total enrollment
1973	25.89594
1974	26.90096
1975	26.42546
1976	25.07053
1977	25.9163
1978	18.32179
1979	27.28511
1980	29.24187
1981	29.9706
1982	30.20493
1983	29.81684
1984	29.53783
1985	28.86771
1986	29.28918
1987	29.34365
1988	29.08793
1990	28.63201
1991	29.18128
1999	26.65005
2000	26.65006
2002	25.16524
2003	25.81304
2004	25.08735
2005	25.96527
2006	25.11011
2007	20.06706
2008	16.80403
2009	14.67856
2010	13.14453
2011	12.49563
2012	12.32195
2014	12.72654
2015	12.17166
2016	11.78686
2017	12.18617
2018	12.24649