Year	% of enrollment
1970	26.66945
1973	25.44704
1980	23.03147
1981	18.97001
1982	20.61892
1985	18.9776
1988	20.11207
1993	18.38723
1995	24.89157
1996	24.885
1997	24.62598
1998	17.35497
1999	17.04865
2000	16.16286
2001	15.15745
2002	14.60631
2003	13.04984
2004	13.04986
2005	12.37776
2006	12.2169
2007	12.58138
2008	11.87728
2009	11.68144
2010	10.62931
2011	9.88329
2012	9.61218
2013	8.86713
2014	8.00746
2015	6.9866
2016	6.3776
2017	6.06553
2018	5.62746