Year Percent 2003 30.89698 2004 22.89723 2005 17.5791 2006 41.62064 2007 126.08774 2008 38.6843 2009 69.92534 2010 66.02345 2011 45.05888 2012 43.19088 2013 41.10598 2014 57.28615 2015 74.0015 2016 65.41635 2017 71.18386