Year	% of total enrollment
1970	0
1971	0
1972	0
1973	0
1974	0
1975	0
1976	0
1977	0
1978	0
1979	0
1980	3.53563
1981	3.5072
1982	3.30185
1983	3.39997
1984	3.17556
1985	3.13691
1986	3.3923
1987	3.34142
1988	3.34603
1989	3.18474
1990	3.06905
1991	3.37607
1992	3.78838