Year % of enrollment 1999 0 2000 0 2001 0 2002 0 2003 0 2004 0.6044 2005 0.89961 2006 0.52769 2007 0.47625 2008 0.17364 2009 0.34577 2010 0.34981 2011 0.27951 2012 0.25645 2014 0.18025 2015 0.12603 2016 0.09562 2017 0.07535