Year	% of total enrollment
1977	5.2225
1978	5.778
1979	5.13067
1981	9.16264
1982	7.90372
1983	7.5816
1984	6.48898
1985	7.53276
1986	5.59366
1990	4.11572
1991	8.93113
1993	7.9383
1998	7.43013
1999	8.82441
2001	6.21734
2005	4.84382
2006	5.17679
2012	2.81036
2013	3.0491