Quarter	Percent, Seasonally Adjusted
1998-01-01	39.0700941937838
1998-04-01	39.2680252225664
1998-07-01	39.2973704531163
1998-10-01	39.1375687202641
1999-01-01	39.1477956832707
1999-04-01	39.2394786961362
1999-07-01	39.3214717389975
1999-10-01	39.3106312158989
2000-01-01	39.4915807511422
2000-04-01	39.7879902010808
2000-07-01	39.9782066972818
2000-10-01	40.1469918366087
2001-01-01	39.9497266003755
2001-04-01	40.2281135123696
2001-07-01	40.2872276901826
2001-10-01	40.4561775044410
2002-01-01	40.5380513092091
2002-04-01	40.4060479841607
2002-07-01	40.3562804249026
2002-10-01	40.3178429208095
2003-01-01	40.5289088572698
2003-04-01	40.6249879995382
2003-07-01	40.8584073416350
2003-10-01	40.9358443223683
2004-01-01	40.8852484238173
2004-04-01	40.8913576350279
2004-07-01	40.9647499758679
2004-10-01	40.8691707964371
2005-01-01	40.8151804897730
2005-04-01	40.6860231631838
2005-07-01	40.4940125116958
2005-10-01	40.4971384815470
2006-01-01	40.4754067559508
2006-04-01	40.6399269939454
2006-07-01	40.8155664705477
2006-10-01	40.9995051957416
2007-01-01	41.1073070920262
2007-04-01	41.1731874578080
2007-07-01	41.2751199620453
2007-10-01	41.3490183768931
2008-01-01	41.4442672811727
2008-04-01	41.4090786495201
2008-07-01	41.6013346151383
2008-10-01	41.5349367237805
2009-01-01	41.4308811389535
2009-04-01	41.2935618787738
2009-07-01	41.2511502064126
2009-10-01	41.3144593880506
2010-01-01	41.5198389162969
2010-04-01	41.6103685269437
2010-07-01	41.5245974020392
2010-10-01	41.5785148381425
2011-01-01	41.7101770784663
2011-04-01	41.6108515026601
2011-07-01	41.7508352971075
2011-10-01	41.8786161997040
2012-01-01	41.7328600716889
2012-04-01	41.4925933801493
2012-07-01	41.1992561120150
2012-10-01	41.0142889633740
2013-01-01	40.9045917214239
2013-04-01	40.6282741952848
2013-07-01	40.6902412991179
2013-10-01	40.6760653098362
2014-01-01	40.7070143786674
2014-04-01	40.8145635666712
2014-07-01	40.7296958268394
2014-10-01	40.5110308404784
2015-01-01	40.4987730703306
2015-04-01	40.5806967035459
2015-07-01	40.6160702294935
2015-10-01	40.6107840761593
2016-01-01	40.2813452197601
2016-04-01	40.1411799330249
2016-07-01	40.0494199202084
2016-10-01	39.8517685185953
2017-01-01	39.8983889721761
2017-04-01	39.9153070611258
2017-07-01	39.5829783630216
2017-10-01	39.7294192678267
2018-01-01	39.5729396501831
2018-04-01	39.4424727514570