Quarter	Percent, Seasonally Adjusted
1998-01-01	38.4770958999246
1998-04-01	38.8249262831481
1998-07-01	38.2503674497826
1998-10-01	38.8693379558399
1999-01-01	39.0681443890556
1999-04-01	39.3768215470049
1999-07-01	39.4295682083280
1999-10-01	39.7872077629118
2000-01-01	38.9049713303542
2000-04-01	37.9711851743073
2000-07-01	38.2708010732398
2000-10-01	37.7808053491161
2001-01-01	38.1515351503319
2001-04-01	38.5428009225325
2001-07-01	39.1371757730331
2001-10-01	40.0420059898246
2002-01-01	41.2400338763664
2002-04-01	41.8522523285549
2002-07-01	43.0816038658273
2002-10-01	43.5445530568377
2003-01-01	43.7268245577618
2003-04-01	44.1799447106231
2003-07-01	44.8415510964487
2003-10-01	44.1633606031542
2004-01-01	44.8277599840979
2004-04-01	44.8740659532680
2004-07-01	45.2628861999805
2004-10-01	45.3333252546916
2005-01-01	46.1956115358958
2005-04-01	46.5623296965041
2005-07-01	47.7467114864657
2005-10-01	47.0329945315194
2006-01-01	48.0510063446456
2006-04-01	47.8434892222499
2006-07-01	47.8501057778096
2006-10-01	47.2029699539223
2007-01-01	47.5585723441469
2007-04-01	47.9914849416030
2007-07-01	48.6977104954012
2007-10-01	48.7059768969337
2008-01-01	49.0161897012090
2008-04-01	49.7311352666529
2008-07-01	49.3421087812511
2008-10-01	50.0323947647690
2009-01-01	50.0696797534143
2009-04-01	50.0135507795344
2009-07-01	49.6415549210779
2009-10-01	48.8515612936678
2010-01-01	49.3782700580421
2010-04-01	49.5490980427122
2010-07-01	49.6677011197970
2010-10-01	50.3189250486368
2011-01-01	50.5488587226452
2011-04-01	51.0877002731988
2011-07-01	50.6614073947949
2011-10-01	50.0865946065599
2012-01-01	50.3856349580886
2012-04-01	52.0229440284176
2012-07-01	53.2869391381234
2012-10-01	53.8945250556028
2013-01-01	53.9030730517801
2013-04-01	54.5174508700162
2013-07-01	55.1866895531486
2013-10-01	55.6524962794293
2014-01-01	55.8823852838223
2014-04-01	56.1332571835598
2014-07-01	57.5251070440376
2014-10-01	57.7211671367662
2015-01-01	57.3270731178849
2015-04-01	58.1496379612131
2015-07-01	58.2747384064092
2015-10-01	58.2317284302399
2016-01-01	59.3108842289132
2016-04-01	60.4754223227228
2016-07-01	61.1645832287164
2016-10-01	62.4392532262623
2017-01-01	62.7817053545343
2017-04-01	63.1732415861213
2017-07-01	63.9416778406677
2017-10-01	64.6842036725394
2018-01-01	65.7672189496929
2018-04-01	66.4239299256875