Quarter	Percent, Seasonally Adjusted
1998-01-01	48.0586844771195
1998-04-01	43.2643845423006
1998-07-01	50.0792262662230
1998-10-01	50.0792707716967
1999-01-01	50.3414489930535
1999-04-01	55.4460793924902
1999-07-01	53.0528021007055
1999-10-01	52.4977223533459
2000-01-01	53.3394034097492
2000-04-01	54.5225106271002
2000-07-01	53.2445496036845
2000-10-01	53.2566480689884
2001-01-01	52.8485131316382
2001-04-01	54.0259996709318
2001-07-01	52.8905789170761
2001-10-01	53.4999239918101
2002-01-01	51.7692633222272
2002-04-01	53.0836330999938
2002-07-01	51.2916841834211
2002-10-01	52.2290921830698
2003-01-01	52.4525820077127
2003-04-01	51.6063909108247
2003-07-01	52.2132458532358
2003-10-01	49.1940287916534
2004-01-01	50.2218134922463
2004-04-01	50.1609614961030
2004-07-01	51.1078251560338
2004-10-01	50.6185172069960
2005-01-01	50.4387776671225
2005-04-01	50.4913514805026
2005-07-01	50.0304547756865
2005-10-01	52.6306827487614
2006-01-01	53.1870365669286
2006-04-01	51.3690971599549
2006-07-01	53.6338341930911
2006-10-01	52.1501380871667
2007-01-01	52.4619165596538
2007-04-01	53.4261256776385
2007-07-01	53.3971469668373
2007-10-01	53.7568457823329
2008-01-01	53.0213928042552
2008-04-01	55.5300040371846
2008-07-01	52.1102551928203
2008-10-01	53.1229294213518
2009-01-01	51.3725173087123
2009-04-01	51.3163088308912
2009-07-01	47.4150814296380
2009-10-01	48.8202151505520
2010-01-01	49.7300803359183
2010-04-01	49.2333093701022
2010-07-01	49.0951371615107
2010-10-01	49.6303420831889
2011-01-01	50.1162001107855
2011-04-01	51.0254456290028
2011-07-01	50.6961540882570
2011-10-01	50.2555287413372
2012-01-01	51.4283410043951
2012-04-01	50.7818044136057
2012-07-01	51.5039223929793
2012-10-01	50.9426342749905
2013-01-01	49.3664265639361
2013-04-01	51.2756156252393
2013-07-01	51.4542115103469
2013-10-01	50.9127184675594
2014-01-01	51.7094917956139
2014-04-01	50.5488056289547
2014-07-01	49.9274060722166
2014-10-01	53.8842016213177
2015-01-01	51.8591135041283
2015-04-01	51.8927484642864
2015-07-01	50.8437103621632
2015-10-01	49.7799365671438
2016-01-01	51.2360021925370
2016-04-01	51.1710217413507
2016-07-01	50.6048683246983
2016-10-01	51.9155319563462
2017-01-01	51.7015435672249
2017-04-01	51.6505305411420
2017-07-01	53.5349470464773
2017-10-01	52.3763709173326
2018-01-01	52.5993402474502
2018-04-01	51.5564642648448