Year	% of total enrollment
1971	32.61413
1972	32.13753
1973	30.37017
1974	30.75548
1975	29.15259
1976	26.14783
1977	24.71282
1978	24.61878
1979	24.72565
1980	24.838
1981	25.70903
1982	27.89116
1983	30.76188
1984	31.73039
1985	33.20116
1986	29.85488
1987	31.31002
1988	30.81986
1989	34.84521
1990	38.51624
1992	32.79049
1993	34.03332
1994	35.65687
1996	33.22106
1999	39.10132
2000	27.22405
2001	24.91551
2002	24.75581
2003	27.81866
2004	24.54387
2005	23.94643
2006	21.21846
2007	21.21853
2008	22.40412
2009	19.6627
2010	19.08174
2011	18.69694
2012	22.79069