Quarter	Percent, Seasonally Adjusted
1999-04-01	58.0639937773192
1999-07-01	58.3562419031252
1999-10-01	58.4802117771398
2000-01-01	58.4142376812836
2000-04-01	58.5909605798642
2000-07-01	58.8562102301510
2000-10-01	58.6446072734260
2001-01-01	58.7485621875336
2001-04-01	58.7865752909264
2001-07-01	58.7759533063822
2001-10-01	58.8239597078888
2002-01-01	58.6729531237013
2002-04-01	58.8068286265069
2002-07-01	58.8099647008649
2002-10-01	58.9402764540417
2003-01-01	58.8676329471411
2003-04-01	59.0345532165360
2003-07-01	58.9927637107238
2003-10-01	59.0397298134936
2004-01-01	59.2711580115537
2004-04-01	59.1777051956574
2004-07-01	59.0425315654704
2004-10-01	59.1903097869336
2005-01-01	59.4829701755469
2005-04-01	59.2644247368595
2005-07-01	59.3411645384349
2005-10-01	59.1666593985047
2006-01-01	59.3423012490123
2006-04-01	59.3496780676747
2006-07-01	59.3924211925798
2006-10-01	59.2563462881034
2007-01-01	59.0652482968236
2007-04-01	59.1698281473667
2007-07-01	59.2411801132179
2007-10-01	59.4576145972049
2008-01-01	59.5121826215482
2008-04-01	59.4821866324905
2008-07-01	59.0825539218857
2008-10-01	58.8781877977644
2009-01-01	58.4201574866645
2009-04-01	57.7474189862956
2009-07-01	57.6679762053376
2009-10-01	57.5532778169470
2010-01-01	57.2231097175513
2010-04-01	57.4899144617248
2010-07-01	57.7836590960390
2010-10-01	57.4866092161113
2011-01-01	57.5550176379460
2011-04-01	57.4387930454956
2011-07-01	57.1456284263998
2011-10-01	57.1284593867061
2012-01-01	57.1994074732097
2012-04-01	57.4910728177869
2012-07-01	57.6544694986705
2012-10-01	57.8471216513156
2013-01-01	57.6728769684684
2013-04-01	57.7454367957807
2013-07-01	57.9849548314566
2013-10-01	58.1898858654779
2014-01-01	58.5582200700175
2014-04-01	58.8157010377937
2014-07-01	58.9640941743064
2014-10-01	59.0392891543888
2015-01-01	59.3869632655944
2015-04-01	59.1741408540116
2015-07-01	59.3785737348041
2015-10-01	59.7242329954952
2016-01-01	59.7315532008024
2016-04-01	59.9764466260021
2016-07-01	59.9096961424414
2016-10-01	59.9473910033916
2017-01-01	60.0761332754538
2017-04-01	60.2296534072885
2017-07-01	60.0621162775193
2017-10-01	60.2569662949748
2018-01-01	60.5219946613048
2018-04-01	60.5266762158368