Quarter	Percent, Seasonally Adjusted
1998-01-01	20.6051380672773
1998-04-01	20.6492683921047
1998-07-01	20.8095111573759
1998-10-01	20.7167012896561
1999-01-01	20.9121747298296
1999-04-01	20.7654482965245
1999-07-01	20.8424222293890
1999-10-01	20.9355369279613
2000-01-01	20.7525420164372
2000-04-01	21.0332338789173
2000-07-01	20.6073864556224
2000-10-01	20.6534834943106
2001-01-01	20.4657035651566
2001-04-01	20.5887352731244
2001-07-01	20.2336722082482
2001-10-01	20.2083690658879
2002-01-01	19.8436070839306
2002-04-01	19.8975455413797
2002-07-01	19.8193927964060
2002-10-01	20.2706105583856
2003-01-01	20.2976260470564
2003-04-01	20.5137984373762
2003-07-01	20.4372831847224
2003-10-01	20.6079238290574
2004-01-01	20.9220904306225
2004-04-01	20.9930977694708
2004-07-01	21.1847539115318
2004-10-01	21.2464268063070
2005-01-01	21.2119341472309
2005-04-01	21.2249985811644
2005-07-01	21.1421946187816
2005-10-01	21.0092174185362
2006-01-01	20.8884499011105
2006-04-01	20.7569904548449
2006-07-01	20.7786349667999
2006-10-01	20.7918286695574
2007-01-01	20.7136581768731
2007-04-01	21.0519045777265
2007-07-01	20.5941008455585
2007-10-01	20.8475207827285
2008-01-01	20.5965827397500
2008-04-01	20.6396595958837
2008-07-01	20.8773863435637
2008-10-01	20.8912281463487
2009-01-01	21.4916410128994
2009-04-01	21.4771781541500
2009-07-01	22.1710250690706
2009-10-01	22.1216074538009
2010-01-01	22.0622527124701
2010-04-01	22.3178472303891
2010-07-01	22.1121840920848
2010-10-01	22.1323749312004
2011-01-01	21.7665275911773
2011-04-01	22.0847202777147
2011-07-01	21.8434306384038
2011-10-01	22.4263770623071
2012-01-01	22.5396069529931
2012-04-01	22.5670127533055
2012-07-01	22.5193880329230
2012-10-01	23.2314256586158
2013-01-01	23.4304433620528
2013-04-01	23.5590611172442
2013-07-01	23.5509748660917
2013-10-01	23.4771079454214
2014-01-01	23.4262310872347
2014-04-01	23.1891727365932
2014-07-01	23.2593085542567
2014-10-01	23.3476318591903
2015-01-01	23.4934255707343
2015-04-01	23.3904776623994
2015-07-01	23.4554338367562
2015-10-01	22.9540608808401
2016-01-01	23.1667771025020
2016-04-01	22.8789048877111
2016-07-01	22.5221925419708
2016-10-01	22.8030598213584
2017-01-01	22.4570672405701
2017-04-01	22.2421560316324
2017-07-01	21.9608759124621
2017-10-01	21.6842027643507
2018-01-01	21.7798174966969
2018-04-01	21.9481065104451