Quarter	Percent, Seasonally Adjusted
1998-01-01	20.3708031828052
1998-04-01	20.5409734123637
1998-07-01	20.7620687091402
1998-10-01	21.0245841335445
1999-01-01	20.9993375857593
1999-04-01	21.1332887221540
1999-07-01	21.6146760141940
1999-10-01	21.3198889896164
2000-01-01	21.6845737600752
2000-04-01	22.2147518204210
2000-07-01	22.2478211188199
2000-10-01	22.4295663048115
2001-01-01	22.5471908827068
2001-04-01	22.2636888482058
2001-07-01	21.7615866206283
2001-10-01	21.9449772968418
2002-01-01	21.7099698830630
2002-04-01	21.3132005434083
2002-07-01	21.1586872425432
2002-10-01	20.8361172901992
2003-01-01	20.9063737072725
2003-04-01	21.0218753709790
2003-07-01	21.0838569163887
2003-10-01	19.5625928009323
2004-01-01	23.3794630356991
2004-04-01	23.2359381937417
2004-07-01	23.6457012136279
2004-10-01	22.1966458396730
2005-01-01	21.2670567666881
2005-04-01	21.0963131906741
2005-07-01	20.0912887603855
2005-10-01	20.7740707495194
2006-01-01	20.7356966830034
2006-04-01	19.7907060162074
2006-07-01	19.8934324679867
2006-10-01	19.6926640322716
2007-01-01	19.3017929247598
2007-04-01	19.8198007190725
2007-07-01	19.5819455983413
2007-10-01	19.3081378069024
2008-01-01	19.7934050378147
2008-04-01	19.4317298610283
2008-07-01	19.2711198355212
2008-10-01	18.4396319088007
2009-01-01	17.5129827156506
2009-04-01	17.2041329492684
2009-07-01	16.5557665608442
2009-10-01	16.3996749605189
2010-01-01	16.7450785197860
2010-04-01	16.5099854312062
2010-07-01	15.9919865681953
2010-10-01	16.0316640400206
2011-01-01	15.7578571626445
2011-04-01	15.0151438928705
2011-07-01	15.3325856741575
2011-10-01	15.8006203017772
2012-01-01	15.2148394590732
2012-04-01	15.0290843999783
2012-07-01	15.0816384482880
2012-10-01	14.5820037479209
2013-01-01	14.1990424167630
2013-04-01	14.0575426688209
2013-07-01	13.6303258704362
2013-10-01	12.9140211209883
2014-01-01	12.8131029709730
2014-04-01	13.0675439728714
2014-07-01	12.7803862239288
2014-10-01	12.4418882349394
2015-01-01	12.0519037261843
2015-04-01	11.9597638975935
2015-07-01	12.5696302245588
2015-10-01	13.1948171280796
2016-01-01	13.5747145793026
2016-04-01	14.1001954050237
2016-07-01	13.7503379818759
2016-10-01	13.5282469555398
2017-01-01	13.8165035596800
2017-04-01	13.7662843606905
2017-07-01	13.8422327627643
2017-10-01	14.0558540019452
2018-01-01	14.1027159721670
2018-04-01	13.8775146171777