Year % of female enrollment 1970 5.0463 1971 5.29024 1972 5.24263 1973 5.21923 1974 4.72593 1975 5.62269 1976 4.35882 1977 4.44411 1978 4.18167 1979 3.89852 1980 3.79337 1981 3.7598 1982 4.1402 1983 4.10051 1984 3.95506 1985 3.79283 1986 3.65655 1987 3.49936 1988 3.30805 1989 3.19163 1990 3.64258 1991 3.14323 1992 3.03243 2013 0.226 2014 0.17507 2015 0.25117 2016 0.34273 2017 0.34161