Year Percent Change From Preceding Period 2004-01-01 -2.85045385468426 2005-01-01 9.00576117893525 2006-01-01 9.40612836211732 2007-01-01 10.41767675407590 2008-01-01 -2.14051524157868 2009-01-01 -1.10718116920004 2010-01-01 5.94543065595721 2011-01-01 5.37864820776029 2012-01-01 3.67956056225535 2013-01-01 6.01807626763858 2014-01-01 4.53088688346094 2015-01-01 4.91118350260383 2016-01-01 4.50303159109607 2017-01-01 5.28482298148491 2018-01-01 3.56513393207154 2019-01-01 3.29739232866544