Year % of total enrollment 1990 1.7637 1993 4.23708 1995 2.76435 1996 2.75139 1997 2.79867 1999 3.36822 2000 3.38091 2001 3.16042 2002 3.12794 2003 2.76431 2004 2.44805 2005 2.25849 2006 2.18858 2007 1.27442 2008 1.70555 2009 1.68072 2010 1.80246 2011 1.64269 2012 1.50004 2015 0.85332 2016 1.15 2017 1.30266