Quarter	Percent, Seasonally Adjusted
1999-01-01	18.2601015676750
1999-04-01	17.3064268479930
1999-07-01	16.8022872223444
1999-10-01	14.9779735682819
2000-01-01	18.9206622231778
2000-04-01	17.8026230918082
2000-07-01	16.7490862180176
2000-10-01	18.6411524403354
2001-01-01	18.3340489480464
2001-04-01	19.3001288106483
2001-07-01	17.9085248013743
2001-10-01	19.6006869901245
2002-01-01	19.3548387096774
2002-04-01	19.6631578947368
2002-07-01	20.5593821749113
2002-10-01	20.8652452908301
2003-01-01	20.1558335042034
2003-04-01	22.7106227106227
2003-07-01	21.8174458611617
2003-10-01	22.2378748239082
2004-01-01	18.0776191433742
2004-04-01	18.5125628140704
2004-07-01	18.4130829800121
2004-10-01	20.2112533008328
2005-01-01	20.7473963651215
2005-04-01	22.3981900452489
2005-07-01	23.6254650682100
2005-10-01	23.0689368770764
2006-01-01	24.2922564529559
2006-04-01	24.9374478732277
2006-07-01	25.0838222967309
2006-10-01	26.3324204760902
2007-01-01	26.8710359408034
2007-04-01	27.0538542766631
2007-07-01	27.5316455696203
2007-10-01	28.4117274836532
2008-01-01	29.6038769490097
2008-04-01	29.4685990338164
2008-07-01	30.8419063615368
2008-10-01	30.3144654088050
2009-01-01	30.3500314399497
2009-04-01	30.5887282631469
2009-07-01	31.0409698996656
2009-10-01	32.3105823418910
2010-01-01	33.6870578443612
2010-04-01	33.8229209764170
2010-07-01	34.4396640032780
2010-10-01	32.5208206378225
2011-01-01	33.0987331590589
2011-04-01	33.3267130089374
2011-07-01	33.1888910774079
2011-10-01	32.4573445773681
2012-01-01	33.3137600313173
2012-04-01	34.7851562500000
2012-07-01	34.6819684886209
2012-10-01	35.1524567877258
2013-01-01	35.1859024012393
2013-04-01	36.9598765432099
2013-07-01	36.6551459293395
2013-10-01	36.6385911179173
2014-01-01	35.8954796872020
2014-04-01	37.7727186492127
2014-07-01	37.9785027343013
2014-10-01	38.1729506659163
2015-01-01	38.7625792023854
2015-04-01	40.4105788792306
2015-07-01	40.5321100917431
2015-10-01	41.0532069970846
2016-01-01	41.2606411881906
2016-04-01	43.2752738373137
2016-07-01	43.1393486385478
2016-10-01	43.1850282485876
2017-01-01	43.3274956217163
2017-04-01	43.8465544176358
2017-07-01	45.1162790697674
2017-10-01	45.5399863294600
2018-01-01	46.2699220074602
2018-04-01	45.6729961351033