Year Percent 2004 88.22702 2005 94.95812 2006 89.15917 2007 92.64507 2008 90.1996 2009 101.68565 2010 111.05922 2011 96.20565 2012 92.00666 2013 100.63171 2014 95.64742 2015 91.46067 2016 83.91345