Year Percent Change 2005-01-01 9.1251 2006-01-01 3.3401 2007-01-01 3.5740 2008-01-01 8.1978 2009-01-01 2.7256 2010-01-01 4.1344 2011-01-01 1.8777 2012-01-01 1.0489 2013-01-01 0.4167 2014-01-01 1.1261 2015-01-01 6.3163 2016-01-01 3.4614 2017-01-01 3.9922