Year	% of enrollment
1971	19.47519
1972	18.39452
1973	16.90834
1974	15.59092
1975	17.45019
1976	15.80687
1977	17.61116
1978	16.2872
1979	14.02562
1980	13.65922
1981	13.04907
1983	13.34291
1985	14.29471
1986	13.51953
1987	12.90241
1988	12.23619
1989	12.35037
1993	11.38291
1996	8.76559
1999	8.3772
2000	8.37718
2003	10.9034
2004	10.90338
2007	12.83205