Year Percent 2004 123.1405 2005 120.82941 2006 100.80808 2007 67.05757 2008 29.28647 2009 9.93711 2010 11.88986 2011 12.55116 2012 12.51664 2013 13.26531 2014 15.02959 2015 14.14791 2016 11.27214