Quarter	Percent, Seasonally Adjusted
1999-01-01	32.1102006505583
1999-04-01	32.0278853374697
1999-07-01	31.7168537115406
1999-10-01	33.0664987618462
2000-01-01	29.2592360223687
2000-04-01	28.2240924277883
2000-07-01	31.5309352509990
2000-10-01	29.7865430645223
2001-01-01	29.4152417672460
2001-04-01	27.1164061997266
2001-07-01	25.7850962135165
2001-10-01	24.7692869994004
2002-01-01	27.5787999012564
2002-04-01	27.8044453107873
2002-07-01	24.7594823319364
2002-10-01	25.7222412030139
2003-01-01	25.1062396213040
2003-04-01	24.1505104931415
2003-07-01	21.9288937384675
2003-10-01	26.0112486678799
2004-01-01	27.8930077951627
2004-04-01	29.7083012533896
2004-07-01	28.5568793031467
2004-10-01	28.1250186486295
2005-01-01	29.6649604848212
2005-04-01	27.4703775164843
2005-07-01	30.6336882665598
2005-10-01	31.4892222291379
2006-01-01	29.6332248672031
2006-04-01	32.3578467073086
2006-07-01	29.0324725647837
2006-10-01	30.0339836967425
2007-01-01	30.4191011970561
2007-04-01	31.7933500699991
2007-07-01	33.1674177657706
2007-10-01	30.4353701558072
2008-01-01	32.1908181564602
2008-04-01	31.9916344662997
2008-07-01	35.7146318343929
2008-10-01	32.8294987174145
2009-01-01	29.5212529087704
2009-04-01	30.9590065946859
2009-07-01	34.1408774466434
2009-10-01	29.4126651224904
2010-01-01	32.3519239409639
2010-04-01	30.7104693405815
2010-07-01	27.9386519247794
2010-10-01	28.9060714472997
2011-01-01	25.6454550908250
2011-04-01	26.7375506067173
2011-07-01	25.3132774644712
2011-10-01	29.8693955443462
2012-01-01	28.1561724102018
2012-04-01	20.4780431659989
2012-07-01	22.5208648040749
2012-10-01	23.6591093954660
2013-01-01	23.8270354258905
2013-04-01	21.4733280166190
2013-07-01	25.3034883368554
2013-10-01	21.5008070310239
2014-01-01	22.2238274216087
2014-04-01	24.3317315032399
2014-07-01	23.9506731343766
2014-10-01	25.3808758152715
2015-01-01	24.4220343690629
2015-04-01	29.6988191686607
2015-07-01	27.3278467738716
2015-10-01	26.9087571274625
2016-01-01	25.1261123480606
2016-04-01	26.3639233126299
2016-07-01	26.0459641365094
2016-10-01	26.6504015027400
2017-01-01	30.9517179245367
2017-04-01	29.7663817748424
2017-07-01	29.7129281661726
2017-10-01	31.0946825598268
2018-01-01	33.1227367865424
2018-04-01	31.9208932265918