Year Percent Change From Preceding Period 2004-01-01 0.250098396561039 2005-01-01 1.992729886116970 2006-01-01 4.905847373637270 2007-01-01 1.125091252630560 2008-01-01 5.337806276275000 2009-01-01 3.039587196645800 2010-01-01 1.279342723004690 2011-01-01 2.939699463051110 2012-01-01 2.382467727408880 2013-01-01 2.050076824734050 2014-01-01 1.852583488374050 2015-01-01 2.698450348428370 2016-01-01 0.872796486088672 2017-01-01 0.642001367879181 2018-01-01 0.992001367879891 2019-01-01 1.092001367879290