Quarter	Percent, Seasonally Adjusted
2006-01-01	21.9401663292600
2006-04-01	22.6347972664854
2006-07-01	22.9437858095091
2006-10-01	23.3744713489893
2007-01-01	23.2622925229127
2007-04-01	22.8827324785598
2007-07-01	22.7208616170071
2007-10-01	22.3380483339079
2008-01-01	22.9056217990988
2008-04-01	23.4953149326838
2008-07-01	23.7702566365952
2008-10-01	23.7765991620086
2009-01-01	23.3540218542207
2009-04-01	23.7580957280728
2009-07-01	24.5619554272415
2009-10-01	25.2514737596779
2010-01-01	25.8204357413163
2010-04-01	25.9748913370712
2010-07-01	26.2007692868672
2010-10-01	26.6881100311888
2011-01-01	27.4386297851648
2011-04-01	27.6269563190248
2011-07-01	28.1948258943459
2011-10-01	28.0723589529517
2012-01-01	28.0513146528800
2012-04-01	28.5941498350304
2012-07-01	28.6995834560325
2012-10-01	29.5364166527150
2013-01-01	29.7554445195671
2013-04-01	29.8145139266689
2013-07-01	29.5878203933686
2013-10-01	29.4441917632296
2014-01-01	29.3402656157105
2014-04-01	29.3991795294360
2014-07-01	29.5431784660870
2014-10-01	29.7591748062484
2015-01-01	29.9454702720720
2015-04-01	30.2585798403421
2015-07-01	30.6399239531011
2015-10-01	30.8911684283522
2016-01-01	31.1756162629481
2016-04-01	31.3211537388332
2016-07-01	31.1397080119954
2016-10-01	30.9768378681326
2017-01-01	31.5999630088648
2017-04-01	31.8598122845861
2017-07-01	32.3770052964506
2017-10-01	32.9927343038735
2018-01-01	32.9942164094131
2018-04-01	32.6906962538841