Year % of total enrollment 1970 0.33252 1971 0.7343 1972 0.88168 1973 1.64484 1974 2.30544 1975 2.89011 1976 2.61331 1977 2.25727 1978 1.99988 1979 2.63047 1980 2.9317 1981 4.62756 1982 5.63547 1983 6.47463 1984 5.88115 1985 5.6854 1986 4.73084 1987 5.31181 1988 4.95003 1989 4.93543 1990 4.87521 1991 4.56106 1992 3.31861 1993 2.6136 1994 2.70437 1995 3.47665 1996 3.28752 1998 3.09832 1999 3.3094 2000 3.39611 2001 3.24176 2002 3.1892 2003 4.6886 2004 4.59762 2005 4.70882 2006 4.66744 2007 4.89321 2008 4.55333 2009 4.55385 2012 4.66248 2013 4.39357 2014 5.3103