Year Percent 2003 -1.48891 2004 0.1442 2005 0 2006 0 2007 0 2008 0 2009 0.17741 2010 0 2011 0.08121 2012 1.24833 2013 0.01226 2014 0.53869 2015 0.46081 2016 1.95361 2017 0.01166