Year	% of enrollment
1975	16.3198
1986	5.32799
1987	4.98179
1990	5.79918
1991	5.38143
1993	5.83626
1994	5.53205
1995	5.58336
1996	6.06495
2005	5.97824
2010	5.98609
2011	5.99152
2012	5.52862
2013	5.77392
2014	5.46119
2015	5.44662
2016	5.56819
2017	5.81269