Year	% of total enrollment
1971	29.61492
1972	27.79178
1973	24.21705
1974	23.68586
1975	21.05146
1977	16.89186
1978	16.71838
1980	7.07557
1981	6.57568
1982	14.50377
1983	14.43176
1984	12.8716
1985	12.56589
1986	12.87176
1987	13.41357
1988	10.34357
1989	10.62768
1990	11.0831
1991	12.7926
1992	14.38077
1999	29.10196
2000	32.54292
2001	36.09305
2002	36.09309
2003	16.5118
2004	18.83329
2006	14.60962
2008	17.70001
2009	14.78007
2010	13.78895
2011	13.54264
2012	12.60861
2013	12.45681
2014	17.07883
2015	18.79345
2016	18.28248
2017	16.14479
2018	13.58886