Quarter	Percent, Seasonally Adjusted
1998-01-01	53.0312024558253
1998-04-01	52.1935847903906
1998-07-01	53.6396456000061
1998-10-01	54.1176256312232
1999-01-01	55.2422272822765
1999-04-01	56.0746855009055
1999-07-01	55.8476550821390
1999-10-01	55.9549277622696
2000-01-01	55.7315652466656
2000-04-01	56.5644378460647
2000-07-01	57.0081758733476
2000-10-01	56.9896303168385
2001-01-01	56.8232510645631
2001-04-01	57.6360389028990
2001-07-01	57.4821327684448
2001-10-01	58.0016892146577
2002-01-01	58.0349618579815
2002-04-01	58.2774486678670
2002-07-01	58.4351700140665
2002-10-01	58.2268609481168
2003-01-01	58.4502240020157
2003-04-01	58.1027797564279
2003-07-01	57.4518723900297
2003-10-01	57.3187476040720
2004-01-01	57.3271899982634
2004-04-01	57.3732609751971
2004-07-01	57.9670573814984
2004-10-01	58.0041734035791
2005-01-01	58.5140257612194
2005-04-01	58.5267202922048
2005-07-01	58.6473430982667
2005-10-01	58.8328241373633
2006-01-01	59.2425293356546
2006-04-01	59.2706356890606
2006-07-01	59.3938874891615
2006-10-01	59.7557273236756
2007-01-01	60.1501712744254
2007-04-01	60.1980744833287
2007-07-01	60.4384345569897
2007-10-01	60.8210120213126
2008-01-01	60.6794135991414
2008-04-01	60.7690651846147
2008-07-01	60.7818950466126
2008-10-01	60.9615840267141
2009-01-01	60.7219870237312
2009-04-01	59.9956828420906
2009-07-01	59.2708373390774
2009-10-01	59.2278239751244
2010-01-01	58.8869158292389
2010-04-01	58.9883914414880
2010-07-01	58.7285079875862
2010-10-01	58.7922494244856
2011-01-01	58.5329189219312
2011-04-01	58.8580326444799
2011-07-01	59.3298553563512
2011-10-01	59.3509989109316
2012-01-01	59.3063694650097
2012-04-01	59.3108169485669
2012-07-01	59.5775750599554
2012-10-01	59.0145810299894
2013-01-01	59.0022680264352
2013-04-01	58.8798023011731
2013-07-01	58.1477779235481
2013-10-01	58.4707260004515
2014-01-01	58.3148784012954
2014-04-01	58.6534474302974
2014-07-01	58.6207790314043
2014-10-01	58.1187223413266
2015-01-01	58.1935897958724
2015-04-01	58.0234516370789
2015-07-01	58.1799525713528
2015-10-01	58.0122672230742
2016-01-01	57.8524397124293
2016-04-01	57.3562068453650
2016-07-01	58.0027492937677
2016-10-01	57.6718603176968
2017-01-01	58.0063672675198
2017-04-01	57.9180935809326
2017-07-01	57.6295545428736
2017-10-01	59.1209011666554
2018-01-01	59.0769905812997
2018-04-01	59.8589614190080