Quarter	Percent, Seasonally Adjusted
1998-01-01	65.3793628457855
1998-04-01	65.3570870398770
1998-07-01	65.5572638812291
1998-10-01	65.4567267718614
1999-01-01	65.3561246804634
1999-04-01	64.9896674552917
1999-07-01	64.8439936153022
1999-10-01	64.9369113521806
2000-01-01	64.7190935429450
2000-04-01	64.8158366977670
2000-07-01	64.7535621044089
2000-10-01	64.6120844533384
2001-01-01	64.1440956290497
2001-04-01	64.1093852120763
2001-07-01	64.0602551222682
2001-10-01	64.0011673232326
2002-01-01	63.8324613069338
2002-04-01	64.1135362660484
2002-07-01	64.1649761589752
2002-10-01	64.2816043588612
2003-01-01	64.5250215609463
2003-04-01	64.3263924800192
2003-07-01	64.2790137918296
2003-10-01	64.2361925846646
2004-01-01	64.3930242185507
2004-04-01	64.4873261174619
2004-07-01	64.2384724951449
2004-10-01	64.3004065349844
2005-01-01	64.3252994543222
2005-04-01	64.2969324272036
2005-07-01	64.2288536296536
2005-10-01	64.3314063697281
2006-01-01	64.5166559637186
2006-04-01	64.3363901482770
2006-07-01	64.2570448607907
2006-10-01	64.3070787030195
2007-01-01	64.1441188746671
2007-04-01	64.0218190373698
2007-07-01	64.2349913240380
2007-10-01	64.2290761265934
2008-01-01	64.2820993574482
2008-04-01	64.2811891229665
2008-07-01	64.0993512724106
2008-10-01	64.0345201198507
2009-01-01	64.0271896424198
2009-04-01	64.0194823212330
2009-07-01	64.1232827350255
2009-10-01	63.9560162644026
2010-01-01	63.9781868230198
2010-04-01	63.6319764384092
2010-07-01	63.3776689719575
2010-10-01	63.2354721389740
2011-01-01	62.7473068162727
2011-04-01	62.3850406521178
2011-07-01	61.9684733532854
2011-10-01	61.5719369078428
2012-01-01	61.4773793482868
2012-04-01	61.2742803241102
2012-07-01	61.0893102525471
2012-10-01	61.2701940845672
2013-01-01	60.9936979837577
2013-04-01	61.0684315394950
2013-07-01	60.8978649022582
2013-10-01	60.6961770351987
2014-01-01	60.5961989286850
2014-04-01	60.2033777166084
2014-07-01	60.0146881831366
2014-10-01	59.6794558606285
2015-01-01	59.5914633205680
2015-04-01	59.6722726713655
2015-07-01	59.8606011573582
2015-10-01	60.0192230613086
2016-01-01	59.8293115220824
2016-04-01	59.8570604162871
2016-07-01	59.8528024739436
2016-10-01	59.7185731246756
2017-01-01	59.8532214930316
2017-04-01	60.0054861240691
2017-07-01	60.1176889165565
2017-10-01	59.9242783581380
2018-01-01	59.9236482330826
2018-04-01	60.0186906758226