Year % of enrollment 2005 0 2006 0 2007 0.80016 2008 0.76574 2009 0.869 2010 0.8052 2011 1.81787 2012 1.71249 2013 1.51911 2014 0.80947 2015 0.87637 2016 0.7992 2017 0.88417 2018 0.89069