Year % of enrollment 1999 3.76764 2000 3.23137 2001 4.09998 2002 3.30616 2003 2.62898 2004 1.54134 2005 4.2171 2006 2.32179 2007 2.19236 2008 2.12921 2009 1.42711 2010 1.46699 2011 2.07794 2012 1.87104 2013 1.84615 2014 1.94655 2015 2.01363 2016 1.43124 2017 1.69382 2018 1.54225