Quarter	Percent, Seasonally Adjusted
1998-01-01	52.4183589049702
1998-04-01	52.2057686163568
1998-07-01	52.1159112168285
1998-10-01	51.9692098990406
1999-01-01	51.9758672760103
1999-04-01	51.8911922130483
1999-07-01	51.8598885502431
1999-10-01	51.9497934819050
2000-01-01	51.9133441438030
2000-04-01	51.7458433671374
2000-07-01	51.5733480455801
2000-10-01	51.4234214025453
2001-01-01	51.4051339129508
2001-04-01	51.5816562499797
2001-07-01	51.3596415059883
2001-10-01	51.4004104997079
2002-01-01	51.2562875731821
2002-04-01	51.1803364623519
2002-07-01	51.0695430957530
2002-10-01	51.0997030627508
2003-01-01	50.9379173784013
2003-04-01	50.7638919411579
2003-07-01	50.7201193563190
2003-10-01	50.9669281229560
2004-01-01	50.3466114563790
2004-04-01	50.4002938973128
2004-07-01	50.4839532381476
2004-10-01	50.4376570678378
2005-01-01	50.6745971233461
2005-04-01	50.8980237805969
2005-07-01	51.1252606265466
2005-10-01	50.8589438361972
2006-01-01	50.7227403580888
2006-04-01	50.7901965361170
2006-07-01	51.0996586164213
2006-10-01	51.0792026689273
2007-01-01	51.5119747218610
2007-04-01	51.4218649789521
2007-07-01	51.0249832971710
2007-10-01	51.0331288576112
2008-01-01	50.8540265170729
2008-04-01	50.6843234784827
2008-07-01	50.8725820248488
2008-10-01	51.1819343147823
2009-01-01	51.3433211339237
2009-04-01	51.5096912977675
2009-07-01	51.5642322179805
2009-10-01	51.6726740332698
2010-01-01	51.6423004521317
2010-04-01	51.6863625243611
2010-07-01	52.0048089632304
2010-10-01	51.8458895503803
2011-01-01	51.9038618806791
2011-04-01	52.0545072432709
2011-07-01	51.8891254574537
2011-10-01	51.5796462421501
2012-01-01	51.1086743740188
2012-04-01	50.8032495429116
2012-07-01	50.8740209813271
2012-10-01	50.8805697640274
2013-01-01	51.0296480103995
2013-04-01	51.2515459559181
2013-07-01	51.2890871394174
2013-10-01	51.2564882957785
2014-01-01	51.0270288795374
2014-04-01	51.1629761341419
2014-07-01	50.8560394506167
2014-10-01	50.7200772918889
2015-01-01	51.0366319017860
2015-04-01	50.9768327235567
2015-07-01	51.0942913707665
2015-10-01	51.0182299127045
2016-01-01	50.8954171017780
2016-04-01	50.3896113675532
2016-07-01	50.4239404408508
2016-10-01	50.2839048922984
2017-01-01	50.1673909582355
2017-04-01	50.3730205728202
2017-07-01	50.0500181494673
2017-10-01	50.1508161800636
2018-01-01	50.0619254510425
2018-04-01	49.7180961614936