Year Percent Change From Preceding Period 2004-01-01 10.442003763976700 2005-01-01 7.008456875970830 2006-01-01 6.725974141388270 2007-01-01 7.318080901669740 2008-01-01 7.199287106724070 2009-01-01 8.353344180609630 2010-01-01 11.258906580302000 2011-01-01 4.887388018407070 2012-01-01 4.279277397510330 2013-01-01 5.394416854610300 2014-01-01 6.309717146424290 2015-01-01 2.652692520943420 2016-01-01 -1.616868291037370 2017-01-01 0.805886973453607 2018-01-01 1.924784826191070 2019-01-01 2.260497408380630