Year	% of enrollment
1977	24.23354
1978	24.42346
1985	26.81865
1987	23.11082
1988	22.8437
1989	21.7575
2005	21.25078
2006	18.86693
2007	19.31867
2008	18.10528
2009	17.90106
2010	17.71178
2011	18.37182
2012	18.18272
2013	17.1976
2014	17.77223
2015	18.58706
2016	17.84294
2017	17.19233
2018	16.0393