Year	% of total enrollment
1971	26.32215
1972	29.24494
1973	28.17146
1974	27.16738
1976	22.91783
1977	23.39056
1978	26.49835
1979	26.72605
1980	28.64274
1981	29.58967
1983	31.02993
1984	29.76318
1985	30.31994
1986	29.56035
1987	28.24902
1988	29.54969
1999	17.40785
2000	17.40786
2001	17.5228
2002	19.27608
2003	19.76477
2004	18.9576
2005	18.58387
2006	16.95643
2007	16.9564
2008	14.22143
2009	13.38939
2010	12.85541
2011	12.85542
2012	19.22117
2013	18.42449
2014	20.06393
2015	19.4586
2016	20.8835
2017	19.67893