Quarter	Percent, Seasonally Adjusted
1998-01-01	13.07546230597710
1998-04-01	13.95987490556130
1998-07-01	15.17835304721140
1998-10-01	16.60175597744280
1999-01-01	17.23064363016810
1999-04-01	18.04901296299440
1999-07-01	19.85862337896310
1999-10-01	18.70909330906260
2000-01-01	17.64045027591090
2000-04-01	17.58183011479410
2000-07-01	16.91941017600930
2000-10-01	17.05778892867190
2001-01-01	17.52294895553360
2001-04-01	17.37523219264430
2001-07-01	17.15834644088050
2001-10-01	16.76350747592770
2002-01-01	16.61939142455740
2002-04-01	16.36209366141160
2002-07-01	17.82794993852800
2002-10-01	18.13872273066270
2003-01-01	19.89553397678760
2003-04-01	18.74662964936480
2003-07-01	18.02694357434280
2003-10-01	18.51041135527150
2004-01-01	19.26932464533870
2004-04-01	19.17075928490400
2004-07-01	19.45442165082160
2004-10-01	20.06155353482270
2005-01-01	17.87050796328530
2005-04-01	19.64435697611960
2005-07-01	19.05708867420230
2005-10-01	19.61462175971260
2006-01-01	20.89590902315150
2006-04-01	19.45603033372090
2006-07-01	18.07935242394250
2006-10-01	16.19555187694070
2007-01-01	12.50229859718000
2007-04-01	11.24778802346960
2007-07-01	10.33653613638180
2007-10-01	9.65731070820428
2008-01-01	10.28418614041640
2008-04-01	9.13548370868012
2008-07-01	9.97063325680459
2008-10-01	10.35255986988190
2009-01-01	13.98207787905800
2009-04-01	15.56094595421400
2009-07-01	16.95036768771440
2009-10-01	20.42370607525870
2010-01-01	19.13634925458490
2010-04-01	18.49155125103770
2010-07-01	18.64938952738430
2010-10-01	17.65749717037560
2011-01-01	18.06464871980430
2011-04-01	19.42765189220260
2011-07-01	16.91403400113830
2011-10-01	17.35114765806610
2012-01-01	18.69057809716760
2012-04-01	18.80671554346420
2012-07-01	18.53604501447500
2012-10-01	19.94807776290050
2013-01-01	18.80935625295140
2013-04-01	19.37138128879120
2013-07-01	19.62903902334970
2013-10-01	20.07571322122500
2014-01-01	18.35832307543570
2014-04-01	18.50989274609320
2014-07-01	16.89781749045000
2014-10-01	14.74035005669710
2015-01-01	14.56418187584630
2015-04-01	14.27457507497280
2015-07-01	14.76618534804120
2015-10-01	14.18688068830180
2016-01-01	12.02356323815030
2016-04-01	10.43253652128740
2016-07-01	11.81434802602730
2016-10-01	11.36273377532090
2017-01-01	10.95646869579840
2017-04-01	10.62079929031640
2017-07-01	7.20120597308391
2017-10-01	6.06553385039277
2018-01-01	7.78998950207878
2018-04-01	8.72842311366434