Year	% of enrollment
1997	4.38652
1999	5.48847
2000	8.47374
2001	1.28676
2002	10.43519
2003	10.66298
2004	9.25838
2005	10.18018
2009	8.26704
2014	5.36456
2015	3.95809
2018	6.52174