Year	% of total enrollment
1970	12.17569
1971	12.23895
1972	12.45338
1973	11.57528
1974	11.5713
1975	12.09555
1976	12.30055
1977	12.14354
1978	12.17234
1979	12.59872
1980	12.23889
1981	12.74466
1982	11.93338
1983	11.92928
1984	11.90996
1985	10.55833
1986	10.00017
1987	10.5367
1988	9.94958
1989	9.7018
1990	9.69087
1991	9.54154
1992	9.61674
1993	8.91535
1994	8.72236
1995	8.68953
1996	8.47253
1997	8.55669
1998	8.51708
1999	8.46179
2000	8.74291
2001	8.09167
2002	7.62975
2003	7.2028
2004	6.69988
2005	6.42117
2006	6.82109
2007	7.23415
2008	6.98008
2009	7.19718
2010	6.88528
2011	6.68692
2012	6.43784
2013	6.42197
2014	6.47669
2015	6.12388
2016	6.31324
2017	6.13264
2018	5.98759