Year % of total enrollment 1983 3.25184 1984 3.30827 1985 3.31277 1986 3.11369 1987 3.0116 1988 2.90152 1989 2.87747 1990 2.74411 1991 2.71849 1992 2.67125 1993 2.42759 1994 2.23749 1995 2.08608 1996 1.96824 1997 1.87699 1998 1.81199 1999 1.73356 2000 1.60384 2001 1.48453 2002 1.35476 2003 1.23622 2004 1.1405 2005 1.05307 2006 1.04918 2007 0.93019 2008 0.95451 2009 0.81344 2010 0.76011 2011 0.92575 2012 0.87135 2013 0.76399 2014 0.68789 2015 0.62571 2016 0.68601 2017 0.73458 2018 0.72771