Year	% of enrollment
1978	24.45522
1979	25.02208
1998	24.44781
1999	25.14293
2000	24.36422
2001	23.33001
2005	22.48889
2006	21.54952
2008	19.95193
2009	18.62333
2010	18.30949
2011	18.90577
2012	18.31246
2013	14.8299
2015	14.54311
2016	14.02736
2017	13.06804
2018	11.53997