Year Percent Change 2009-01-01 12.4422 2010-01-01 8.3787 2011-01-01 12.3915 2012-01-01 10.8872 2013-01-01 9.0153 2014-01-01 7.1917 2015-01-01 8.2566 2016-01-01 6.8958 2017-01-01 4.2172 2018-01-01 5.1837 2019-01-01 5.0766