Quarter	Percent, Seasonally Adjusted
1999-01-01	23.0362721851899
1999-04-01	22.2982565226839
1999-07-01	21.7381598034964
1999-10-01	21.8247998171162
2000-01-01	21.4903554302275
2000-04-01	21.5076545678640
2000-07-01	21.0526085265240
2000-10-01	21.2716896490786
2001-01-01	21.8404704901013
2001-04-01	22.4874814380246
2001-07-01	22.5265898140858
2001-10-01	22.5577598483302
2002-01-01	22.5929405298295
2002-04-01	22.2196629756287
2002-07-01	22.7403632669520
2002-10-01	23.6837769953291
2003-01-01	22.9768544322786
2003-04-01	24.7229775245929
2003-07-01	25.3266752282362
2003-10-01	25.5039596109825
2004-01-01	25.2972135075655
2004-04-01	26.2590031377191
2004-07-01	27.3380466974956
2004-10-01	28.2012997024320
2005-01-01	28.5497096735971
2005-04-01	30.0164105131866
2005-07-01	30.7469964773345
2005-10-01	31.8261169355805
2006-01-01	32.1356701698996
2006-04-01	32.8879577359701
2006-07-01	33.4076180098061
2006-10-01	33.9015804370862
2007-01-01	34.2750802165047
2007-04-01	35.4098995990680
2007-07-01	35.9568127774646
2007-10-01	36.8981883059485
2008-01-01	37.6869062555835
2008-04-01	38.5008197610336
2008-07-01	40.3442469637512
2008-10-01	40.3660368450366
2009-01-01	39.4070100842103
2009-04-01	39.7025993515964
2009-07-01	39.9436222501683
2009-10-01	39.0682964109171
2010-01-01	40.3478472410718
2010-04-01	40.7965695644846
2010-07-01	40.7245363451462
2010-10-01	40.2939656349480
2011-01-01	40.1951872526038
2011-04-01	41.0798028348585
2011-07-01	42.0620642421240
2011-10-01	42.0487427204868
2012-01-01	42.1547895633755
2012-04-01	43.2047140800277
2012-07-01	42.9548797656126
2012-10-01	43.9543694330248
2013-01-01	44.3469831658026
2013-04-01	43.8711816386071
2013-07-01	44.0775305265645
2013-10-01	43.8058693110018
2014-01-01	42.9305703895793
2014-04-01	44.2527001984797
2014-07-01	45.8463161392746
2014-10-01	46.0569186340954
2015-01-01	45.9520604141016
2015-04-01	46.6727900614155
2015-07-01	47.4892009323727
2015-10-01	47.7322362690306
2016-01-01	47.5029756938526
2016-04-01	48.8032614593668
2016-07-01	49.4952958589632
2016-10-01	50.3449371232615
2017-01-01	51.6890708278005
2017-04-01	52.7411541650912
2017-07-01	53.3223185524472
2017-10-01	54.1192762835930
2018-01-01	53.9764475863113
2018-04-01	53.4417735083499