Year	% of enrollment
1999	21.27587
2000	21.28135
2001	22.40501
2002	24.15411
2003	20.72935
2005	23.88047
2006	28.75603
2007	27.19585
2008	26.03889
2009	26.70443
2011	21.20752
2012	24.45797
2013	19.08421
2014	15.92725
2015	16.9753
2016	16.56565
2017	16.7714
2018	15.42734