Year Percent 2000 0.88598 2001 0.7427 2002 0.75955 2003 0.75667 2004 1.25666 2005 1.14041 2006 1.01121 2007 0.92775 2008 0.94705 2009 1.19567 2010 1.22149 2011 1.10013 2012 1.29539 2013 1.10103 2014 0.98425 2015 0.83255 2016 0.9584 2017 0.91409