Quarter	Percent, Seasonally Adjusted
1999-01-01	41.4248505935340
1999-04-01	41.5955407411411
1999-07-01	41.7110587368967
1999-10-01	41.7474614281673
2000-01-01	41.6730124134876
2000-04-01	41.8038989254436
2000-07-01	41.8710929054617
2000-10-01	42.1825028402927
2001-01-01	41.5487591528348
2001-04-01	41.2526839779952
2001-07-01	41.3895394170891
2001-10-01	41.0970586293001
2002-01-01	41.3366159402096
2002-04-01	41.5133097884689
2002-07-01	41.6114068921630
2002-10-01	41.8388241402175
2003-01-01	42.2128627038023
2003-04-01	42.4954895872539
2003-07-01	42.5839410436348
2003-10-01	42.7326231843364
2004-01-01	42.5737019026039
2004-04-01	42.3707119958234
2004-07-01	42.3510335595434
2004-10-01	42.6768507086099
2005-01-01	42.9161101005535
2005-04-01	43.1303286908747
2005-07-01	43.1830681993232
2005-10-01	43.0981922999939
2006-01-01	43.4677375780699
2006-04-01	43.4049590245646
2006-07-01	43.3559712363531
2006-10-01	43.3697182662599
2007-01-01	43.0898283397169
2007-04-01	42.9394067889011
2007-07-01	42.9010473684574
2007-10-01	42.9727252228005
2008-01-01	42.6182179609008
2008-04-01	42.4735907678727
2008-07-01	42.8700041873329
2008-10-01	42.9673132707284
2009-01-01	42.7317102167064
2009-04-01	42.7685456979523
2009-07-01	42.7354012021695
2009-10-01	43.0922094036440
2010-01-01	43.6862612140297
2010-04-01	43.7858875779406
2010-07-01	43.8909980240680
2010-10-01	43.7346631210877
2011-01-01	43.6867351086837
2011-04-01	44.0075039182487
2011-07-01	43.9419061609964
2011-10-01	44.2221498805070
2012-01-01	44.5085743967600
2012-04-01	44.9516761967860
2012-07-01	45.3063866661216
2012-10-01	45.1133697697967
2013-01-01	44.8543288814534
2013-04-01	45.1089912491042
2013-07-01	45.0811955015578
2013-10-01	45.4666024538316
2014-01-01	46.2231897324738
2014-04-01	46.3783840570758
2014-07-01	46.5535200590389
2014-10-01	46.6796133596999
2015-01-01	47.1730625674409
2015-04-01	47.3596555340936
2015-07-01	47.4581237930665
2015-10-01	47.4369567954602
2016-01-01	47.7238413247110
2016-04-01	47.8756400791631
2016-07-01	48.1412401284139
2016-10-01	48.3948161831598
2017-01-01	48.2158732238145
2017-04-01	48.3811816534670
2017-07-01	48.4279577350925
2017-10-01	48.4564802452803
2018-01-01	48.6772944289246
2018-04-01	48.7591540568163