Quarter	Percent, Seasonally Adjusted
1999-01-01	40.7481630111737
1999-04-01	40.4234297666200
1999-07-01	39.7211940024710
1999-10-01	39.3691548006319
2000-01-01	38.9496083171979
2000-04-01	38.4650686563937
2000-07-01	37.9743920821298
2000-10-01	37.8299022466974
2001-01-01	36.3071357561326
2001-04-01	34.7545667438063
2001-07-01	34.0620118041681
2001-10-01	33.2912217965423
2002-01-01	32.9269639560338
2002-04-01	32.9820692070890
2002-07-01	32.5760067081494
2002-10-01	32.0835621825341
2003-01-01	32.3192459130501
2003-04-01	31.2541481811485
2003-07-01	30.6678011643355
2003-10-01	29.5183426051120
2004-01-01	29.0306688450361
2004-04-01	27.9072776799754
2004-07-01	27.1835594773767
2004-10-01	27.4935988858244
2005-01-01	27.7016863823505
2005-04-01	27.2369768649061
2005-07-01	26.7046208998959
2005-10-01	26.6461400938453
2006-01-01	26.5035209748603
2006-04-01	26.4498257968404
2006-07-01	27.0608627433576
2006-10-01	26.8768912493978
2007-01-01	26.4492247267427
2007-04-01	25.7093815289807
2007-07-01	25.5586777761254
2007-10-01	25.1968883755408
2008-01-01	25.1036561248620
2008-04-01	24.8937772959338
2008-07-01	25.5306417671338
2008-10-01	24.9719435011234
2009-01-01	24.1660436918395
2009-04-01	24.9375179684602
2009-07-01	24.7331177900326
2009-10-01	24.8083429519531
2010-01-01	24.9301608393777
2010-04-01	24.9406349803990
2010-07-01	24.4613505403848
2010-10-01	24.8610849913655
2011-01-01	24.5840837143068
2011-04-01	24.3113096005184
2011-07-01	24.4289061536766
2011-10-01	23.8213568273768
2012-01-01	24.3759389794219
2012-04-01	25.1498499935904
2012-07-01	26.1195483316567
2012-10-01	27.1395248484742
2013-01-01	26.8030041962461
2013-04-01	26.9467449927378
2013-07-01	27.9278652519130
2013-10-01	27.8782271011329
2014-01-01	29.2085269266586
2014-04-01	29.5966426302611
2014-07-01	29.5135953061841
2014-10-01	29.7682975867218
2015-01-01	30.2554615472160
2015-04-01	31.2254847047668
2015-07-01	31.2816577797148
2015-10-01	31.3341563200662
2016-01-01	31.9112487926716
2016-04-01	32.1232696086909
2016-07-01	32.5392641135032
2016-10-01	32.5957431883524
2017-01-01	32.4346394066412
2017-04-01	32.9882238748072
2017-07-01	32.1473621673775
2017-10-01	32.1770505796527
2018-01-01	31.7739325299956
2018-04-01	32.2935033052478