Quarter	Percent, Seasonally Adjusted
1999-04-01	83.7040486864041
1999-07-01	83.9488038363448
1999-10-01	84.0947186473500
2000-01-01	83.8121488649834
2000-04-01	83.9169870013253
2000-07-01	83.9871747279111
2000-10-01	83.8054600636890
2001-01-01	83.7863627061822
2001-04-01	83.6558577288570
2001-07-01	83.5227463037215
2001-10-01	83.5756563082292
2002-01-01	83.4288540817847
2002-04-01	83.7832149729584
2002-07-01	83.9308667275152
2002-10-01	84.0500605818090
2003-01-01	83.6885358024828
2003-04-01	83.8422305214449
2003-07-01	83.7815756009195
2003-10-01	83.7580963309784
2004-01-01	83.8297116247767
2004-04-01	83.7206046078452
2004-07-01	83.6149748875479
2004-10-01	83.8625494346505
2005-01-01	84.0239739628414
2005-04-01	84.0125606927985
2005-07-01	84.1575410079292
2005-10-01	84.2719304939309
2006-01-01	84.6370540466549
2006-04-01	84.6296760180959
2006-07-01	84.4334079923092
2006-10-01	84.4494688271128
2007-01-01	84.3482125257745
2007-04-01	84.4871579997847
2007-07-01	84.5509202486579
2007-10-01	84.5403822153705
2008-01-01	84.7775293438526
2008-04-01	84.8499560371584
2008-07-01	84.7867546567152
2008-10-01	84.9425395373875
2009-01-01	85.2057233761591
2009-04-01	84.8962004927108
2009-07-01	85.0130247816176
2009-10-01	85.0683566714651
2010-01-01	84.6861122177662
2010-04-01	84.8872715558168
2010-07-01	85.0508487559318
2010-10-01	85.0658483988036
2011-01-01	85.2623571487733
2011-04-01	85.2154250971082
2011-07-01	85.2492652371915
2011-10-01	85.3915245857757
2012-01-01	85.3507312777238
2012-04-01	85.3774177162995
2012-07-01	85.6731430189843
2012-10-01	85.7589462429823
2013-01-01	85.6808895222491
2013-04-01	85.7213670008315
2013-07-01	85.6756158945827
2013-10-01	85.6756360776878
2014-01-01	85.9882784114164
2014-04-01	86.0859980953020
2014-07-01	86.0671210801204
2014-10-01	85.8515057470949
2015-01-01	85.8815031742000
2015-04-01	85.7613840554866
2015-07-01	85.7116423846932
2015-10-01	85.9049240104544
2016-01-01	85.8963645088874
2016-04-01	86.0819541824056
2016-07-01	86.1630184526933
2016-10-01	86.1648736182204
2017-01-01	86.2353136473479
2017-04-01	86.6234424333736
2017-07-01	86.5786083611965
2017-10-01	86.7299543925607
2018-01-01	86.8945823694781
2018-04-01	86.7813286810650