Quarter	Percent, Seasonally Adjusted
1998-01-01	61.9171759175872
1998-04-01	62.0632905432080
1998-07-01	62.0415894695803
1998-10-01	62.0092663350600
1999-01-01	61.9397011443891
1999-04-01	61.9443561261318
1999-07-01	61.9830831771795
1999-10-01	61.8778940662673
2000-01-01	61.8692514232639
2000-04-01	61.9048101925303
2000-07-01	61.9859364096340
2000-10-01	62.0572647910842
2001-01-01	61.8738447674663
2001-04-01	61.6452308950390
2001-07-01	61.7901861213747
2001-10-01	61.7256782943981
2002-01-01	61.8188389360950
2002-04-01	61.8765865933726
2002-07-01	61.9488318358680
2002-10-01	61.9557813070138
2003-01-01	62.1774014190909
2003-04-01	62.1444250190456
2003-07-01	62.1913990247103
2003-10-01	62.2070034581386
2004-01-01	61.5345565137024
2004-04-01	61.7484029195287
2004-07-01	61.6053382091317
2004-10-01	61.4866485515680
2005-01-01	61.3249882088315
2005-04-01	61.1071776686626
2005-07-01	60.9124453133102
2005-10-01	60.9723981336469
2006-01-01	61.0515780895102
2006-04-01	61.0161629335799
2006-07-01	60.7030410644376
2006-10-01	60.5976902009258
2007-01-01	60.3144665112047
2007-04-01	60.3421363710233
2007-07-01	60.5777616486687
2007-10-01	60.5292499072666
2008-01-01	60.4800872695108
2008-04-01	60.6320449513139
2008-07-01	60.3415094926299
2008-10-01	60.1122809780577
2009-01-01	59.8245572333031
2009-04-01	59.5245720190486
2009-07-01	59.5826858171235
2009-10-01	59.3586184612119
2010-01-01	59.4146597482532
2010-04-01	59.2543281215244
2010-07-01	58.7848687569682
2010-10-01	58.8787896966754
2011-01-01	58.7590051482399
2011-04-01	58.5543330469049
2011-07-01	58.6963617716513
2011-10-01	58.8537437358874
2012-01-01	59.1471231855735
2012-04-01	59.3933000661315
2012-07-01	59.2302668471677
2012-10-01	59.1946242300560
2013-01-01	58.8509624463038
2013-04-01	58.6517598763352
2013-07-01	58.5888548918416
2013-10-01	58.5000811206488
2014-01-01	58.6941606746780
2014-04-01	58.5729793828510
2014-07-01	58.7577800664856
2014-10-01	58.7927121977851
2015-01-01	58.7083266205032
2015-04-01	58.8888886808954
2015-07-01	58.9464707396049
2015-10-01	58.9801847823580
2016-01-01	59.0081273198144
2016-04-01	59.3346610923720
2016-07-01	59.2467900501819
2016-10-01	59.4133935181623
2017-01-01	59.4787082713198
2017-04-01	59.2091676309666
2017-07-01	59.4217297331091
2017-10-01	59.3485815420920
2018-01-01	59.3695145864944
2018-04-01	59.7152173851814