Year Percent Change 2005-01-01 3.9805 2006-01-01 6.2195 2007-01-01 7.9388 2008-01-01 18.9409 2009-01-01 8.5132 2010-01-01 7.0264 2011-01-01 8.2760 2012-01-01 6.1955 2013-01-01 8.9929 2014-01-01 9.2063 2015-01-01 6.9413 2016-01-01 13.3902