Quarter	Percent, Seasonally Adjusted
1999-01-01	14.93862547921350
1999-04-01	15.86712502176650
1999-07-01	16.89805270695550
1999-10-01	17.74225621456180
2000-01-01	18.36444824108740
2000-04-01	18.91875042610080
2000-07-01	18.91904102881710
2000-10-01	18.85500523126720
2001-01-01	19.28655341792700
2001-04-01	19.36868832410340
2001-07-01	19.36698435872180
2001-10-01	19.29206143659970
2002-01-01	18.97857572508910
2002-04-01	18.85973263584800
2002-07-01	18.59190845946640
2002-10-01	18.30757050050310
2003-01-01	17.79545512976450
2003-04-01	17.28672901740230
2003-07-01	17.45542878248480
2003-10-01	17.82537592563200
2004-01-01	18.70740371571590
2004-04-01	18.72048327469060
2004-07-01	17.96957125596900
2004-10-01	17.62474475618870
2005-01-01	17.12349038250430
2005-04-01	16.49851691938340
2005-07-01	15.95353680490940
2005-10-01	15.54932072602920
2006-01-01	14.66712885855570
2006-04-01	13.69889203768210
2006-07-01	12.97550004357210
2006-10-01	12.27516869694110
2007-01-01	11.50989128973930
2007-04-01	11.31303094960670
2007-07-01	11.24888023587960
2007-10-01	10.60573867993740
2008-01-01	10.37437832109970
2008-04-01	10.16782344483600
2008-07-01	8.83861859489201
2008-10-01	8.77959816007898
2009-01-01	10.26296436165550
2009-04-01	11.48035512865170
2009-07-01	12.57736595550260
2009-10-01	13.92246584619100
2010-01-01	14.84204153823760
2010-04-01	14.56347754768110
2010-07-01	14.31346240978160
2010-10-01	13.98680378606450
2011-01-01	13.77542147568200
2011-04-01	13.39470649626270
2011-07-01	13.45432612530380
2011-10-01	14.05386610787400
2012-01-01	13.89525902707540
2012-04-01	13.83038775038710
2012-07-01	13.93725243005820
2012-10-01	14.37934899118030
2013-01-01	14.29863966526620
2013-04-01	14.28424637448210
2013-07-01	14.27367929633850
2013-10-01	14.21272476835100
2014-01-01	13.81819395417670
2014-04-01	13.42593064411500
2014-07-01	13.01382730670240
2014-10-01	12.63020828464620
2015-01-01	12.24728553485310
2015-04-01	11.53377971824490
2015-07-01	11.38210242989290
2015-10-01	11.01740948141130
2016-01-01	10.28302932417710
2016-04-01	9.84524448496660
2016-07-01	9.59808149272640
2016-10-01	9.17322332951394
2017-01-01	8.67257203938717
2017-04-01	8.24769558192041
2017-07-01	8.06528360429070
2017-10-01	7.80315705372246
2018-01-01	7.14888091844466
2018-04-01	6.79059940137276