Quarter	Percent, Seasonally Adjusted
1999-01-01	25.1860432448024
1999-04-01	24.7255014232064
1999-07-01	24.1885108805717
1999-10-01	24.1026257747984
2000-01-01	25.9633017956506
2000-04-01	25.0255294592160
2000-07-01	27.4006685969347
2000-10-01	26.7468840517204
2001-01-01	24.8743321858640
2001-04-01	25.1837422244803
2001-07-01	25.1082666619153
2001-10-01	25.1903478342284
2002-01-01	26.7644706608223
2002-04-01	25.8375441494065
2002-07-01	26.9133217299080
2002-10-01	26.8578195316352
2003-01-01	26.6518961315350
2003-04-01	28.0326001488566
2003-07-01	28.3484541659404
2003-10-01	29.2146978962245
2004-01-01	29.3189571887597
2004-04-01	30.1635563797073
2004-07-01	30.5606557236434
2004-10-01	29.8826305276698
2005-01-01	30.6894524573661
2005-04-01	32.1138529868309
2005-07-01	32.7912943708394
2005-10-01	31.6151136027330
2006-01-01	31.4475851241547
2006-04-01	30.4876661169674
2006-07-01	32.1022608904829
2006-10-01	33.8931318797901
2007-01-01	34.1158717400764
2007-04-01	33.9158174325910
2007-07-01	34.3875004223537
2007-10-01	35.0328257339011
2008-01-01	34.7446366498221
2008-04-01	32.8200561031623
2008-07-01	35.5583289011102
2008-10-01	34.9183812965174
2009-01-01	34.1477682270645
2009-04-01	34.8778013005225
2009-07-01	35.8674050436326
2009-10-01	36.1022125579282
2010-01-01	37.2120596915067
2010-04-01	36.9125802693245
2010-07-01	37.4607781684707
2010-10-01	37.7540208636503
2011-01-01	37.2423798534415
2011-04-01	40.1747266523090
2011-07-01	38.6210307596176
2011-10-01	38.7866826173765
2012-01-01	38.6003319284167
2012-04-01	40.3451024962709
2012-07-01	40.1108420538210
2012-10-01	38.9115582477696
2013-01-01	40.6489618868724
2013-04-01	41.6283739398682
2013-07-01	42.8750782713153
2013-10-01	41.7266283057104
2014-01-01	41.0935898096239
2014-04-01	43.7155420743216
2014-07-01	42.3610549365759
2014-10-01	43.4249399336132
2015-01-01	43.0662844013935
2015-04-01	43.7888180384321
2015-07-01	44.6158379612341
2015-10-01	44.5979642950129
2016-01-01	44.1720622260990
2016-04-01	45.6566541674884
2016-07-01	45.5127435237086
2016-10-01	46.3128609846289
2017-01-01	46.3372193514582
2017-04-01	47.8146384024456
2017-07-01	49.1620217818860
2017-10-01	49.6858666638433
2018-01-01	49.7061732112286
2018-04-01	49.8039595746106