Year Percent Change From Preceding Period 2004-01-01 8.17711248656810 2005-01-01 13.25309339184020 2006-01-01 2.74409181197702 2007-01-01 8.41200778870679 2008-01-01 24.40690262510530 2009-01-01 10.55657466806780 2010-01-01 6.49645176528705 2011-01-01 9.58281437048775 2012-01-01 18.17606824160310 2013-01-01 7.93795807492417 2014-01-01 4.41677844738428 2015-01-01 5.55328908443073 2016-01-01 5.52701332772920 2017-01-01 16.64265873586810 2018-01-01 1.23816373228330 2019-01-01 7.31475168687839