Year % of total enrollment 1975 5.46086 1980 4.8805 1981 4.16709 1982 4.23635 1983 4.0111 1984 4.32813 1986 7.28964 1990 10.42481 1991 6.17755 1992 6.15716 1993 5.94964 1994 8.66051 2010 7.24059 2011 8.14655 2012 8.1899 2013 7.06846 2014 7.09936 2015 9.4027 2016 8.86169 2017 6.79914 2018 5.7812