Year	% of total enrollment
1992	12.63943
1994	14.53794
1998	10.96142
2000	10.55951
2001	6.71838
2002	8.11849
2003	9.14238
2004	10.67505
2007	13.55739
2008	13.01671
2009	14.01114
2010	13.3958
2013	15.56325