Year	% of enrollment
1971	11.94622
1972	12.25699
1973	12.20057
1974	12.1236
1975	12.09839
1976	12.29528
1989	10.67476
1999	12.10025
2000	11.98246
2001	12.25343
2002	12.72058
2003	12.93141
2004	12.92782
2005	12.88676
2006	13.10946
2007	13.27606
2008	12.85235
2009	12.71425
2010	12.43205
2011	12.60116
2012	12.12063
2013	12.66218
2014	12.70402
2015	13.13218
2016	13.11577
2017	13.46627