Quarter	Percent, Seasonally Adjusted
2004-01-01	19.0058479532164
2004-04-01	14.9903079905234
2004-07-01	17.5844760039177
2004-10-01	17.6132469125410
2005-01-01	16.0674067989719
2005-04-01	17.2852041173587
2005-07-01	18.3057704835594
2005-10-01	16.8912609821315
2006-01-01	16.5507315903094
2006-04-01	17.1703960077270
2006-07-01	17.8539294317973
2006-10-01	17.3734957227780
2007-01-01	17.7466133117956
2007-04-01	18.3366497829233
2007-07-01	20.1296209440157
2007-10-01	19.8270466150552
2008-01-01	16.7930483256138
2008-04-01	17.9685598870881
2008-07-01	19.6527378704540
2008-10-01	20.7795353187793
2009-01-01	18.3530583077738
2009-04-01	19.0782694167446
2009-07-01	19.6888787523692
2009-10-01	19.0878544936022
2010-01-01	16.1350945847705
2010-04-01	18.9041826863875
2010-07-01	19.2033453063850
2010-10-01	19.3156036898114
2011-01-01	16.4331078505482
2011-04-01	18.5458325388576
2011-07-01	19.0410179853558
2011-10-01	18.5260033995715
2012-01-01	16.9351685526964
2012-04-01	18.8643777298612
2012-07-01	19.4847260848453
2012-10-01	18.5327851582126
2013-01-01	17.2705367899692
2013-04-01	18.9659073568335
2013-07-01	18.8686465854960
2013-10-01	18.3706905216605
2014-01-01	17.3633112427364
2014-04-01	19.0732331244547
2014-07-01	19.3460225449099
2014-10-01	19.3497505681633
2015-01-01	17.4240565229671
2015-04-01	19.4774281429299
2015-07-01	19.9898296004032
2015-10-01	19.4782365598685
2016-01-01	18.6530783505422
2016-04-01	20.0168812157737
2016-07-01	21.2176679248141
2016-10-01	20.8497464346645
2017-01-01	18.7693517471863
2017-04-01	20.2716307270006
2017-07-01	21.4850805308017
2017-10-01	21.1409621625830
2018-01-01	19.9875585480094
2018-04-01	21.2375453334126