Year	% of total enrollment
1976	23.89517
1977	22.59252
1978	25.36774
1979	25.79121
1981	22.33357
1982	21.22174
1983	21.72448
1984	22.6401
1985	21.69228
1987	23.06292
1988	23.39291
1989	22.89431
2005	20.2573
2006	13.98345
2007	15.73362
2008	17.21022
2009	17.0836
2010	17.59654
2011	16.56967
2012	16.80336
2013	16.16065
2014	15.81612
2015	16.58601
2016	17.14249
2017	16.80879
2018	16.44005