Year Percent 2005 11.62872 2006 2.30187 2007 2.15979 2008 0.05031 2009 0.08002 2010 0.02797 2011 0.12746 2012 0.15948 2013 0.30048 2014 1.12671 2015 0.8414 2016 0.28402 2017 0.0824