Year	% of total enrollment
1970	17.66778
1971	17.4952
1972	17.53239
1973	17.19531
1974	16.78425
1975	15.34066
1976	14.67345
1977	14.11873
1978	14.14611
1980	13.59968
1981	13.15888
1982	12.82782
1983	10.23057
1984	11.17532
1985	10.59892
1986	9.58397
1987	9.34225
1988	8.9327
1989	9.1046
1990	8.55468
1991	8.89522
1992	8.97354
1993	8.26015
1994	8.11351
1995	7.91793
1996	9.09032
1998	8.55764
1999	7.78565
2000	7.6512
2001	7.98646
2002	7.57858
2003	7.29608
2004	6.70113
2005	5.11769
2006	4.84456
2007	4.06184
2008	4.45489
2009	4.97355
2010	4.78785
2011	4.59682
2012	4.55522
2016	2.86159