Quarter	Percent, Seasonally Adjusted
1998-01-01	55.9674671803841
1998-04-01	55.7665790059761
1998-07-01	55.8193416198984
1998-10-01	56.1805310699238
1999-01-01	56.1763952608510
1999-04-01	56.2085913558216
1999-07-01	56.3100601679817
1999-10-01	56.4159395764098
2000-01-01	56.2577567851771
2000-04-01	56.0344286201409
2000-07-01	55.8325072258366
2000-10-01	55.7284934842402
2001-01-01	56.1258377287461
2001-04-01	55.6373739228795
2001-07-01	55.5322614975286
2001-10-01	55.2083255843724
2002-01-01	55.1608591501918
2002-04-01	55.4057676431232
2002-07-01	55.6466137816380
2002-10-01	55.7163230890164
2003-01-01	55.6556556431838
2003-04-01	55.6759800076885
2003-07-01	55.2482652439235
2003-10-01	55.1066449413874
2004-01-01	55.2380455030560
2004-04-01	55.1579997401617
2004-07-01	55.0184120911687
2004-10-01	55.1345484928388
2005-01-01	55.0796599483389
2005-04-01	55.4843416082092
2005-07-01	55.7853335575543
2005-10-01	55.9634591848216
2006-01-01	55.8665647336535
2006-04-01	55.6088207826938
2006-07-01	55.4075647999153
2006-10-01	55.0412182818181
2007-01-01	55.0281349721507
2007-04-01	54.9225555378017
2007-07-01	54.6701229130780
2007-10-01	54.6212293213839
2008-01-01	54.5053019532978
2008-04-01	54.5081185479399
2008-07-01	54.2540774062995
2008-10-01	54.3072719094360
2009-01-01	54.4082654797016
2009-04-01	54.5450069464051
2009-07-01	54.7653881363010
2009-10-01	54.6293227089740
2010-01-01	54.2258384138874
2010-04-01	54.2181733350101
2010-07-01	54.3816450716601
2010-10-01	54.5069059136699
2011-01-01	54.6144681586709
2011-04-01	54.7649266556326
2011-07-01	54.6717664849742
2011-10-01	54.5330833517484
2012-01-01	54.6493272552010
2012-04-01	55.1217105240648
2012-07-01	55.4215055681179
2012-10-01	55.8316289056631
2013-01-01	55.9679166916736
2013-04-01	56.4952475757098
2013-07-01	56.4309064361405
2013-10-01	56.4588748622059
2014-01-01	56.2783982209660
2014-04-01	56.0437153676448
2014-07-01	56.1897880729910
2014-10-01	56.6872481113298
2015-01-01	56.8262405022077
2015-04-01	56.7961100630792
2015-07-01	56.9213807335060
2015-10-01	56.7976053458778
2016-01-01	57.2276794167041
2016-04-01	57.5373585055266
2016-07-01	57.6348746903934
2016-10-01	58.0636879482239
2017-01-01	58.0274196499020
2017-04-01	57.8828181361053
2017-07-01	58.5057718277972
2017-10-01	58.3303023606322
2018-01-01	58.6745487628780
2018-04-01	59.0339098980812