Quarter	Percent, Seasonally Adjusted
1999-01-01	85.4583662104894
1999-04-01	85.4472400530697
1999-07-01	84.5598176867340
1999-10-01	85.5256787746005
2000-01-01	85.2348988309261
2000-04-01	85.3229850966587
2000-07-01	86.2357525578572
2000-10-01	86.0649216628437
2001-01-01	86.4854742673813
2001-04-01	87.3670707638119
2001-07-01	87.6973897111267
2001-10-01	86.4692186547754
2002-01-01	87.6667628875134
2002-04-01	86.9137372726154
2002-07-01	85.8540124653100
2002-10-01	86.3417521355425
2003-01-01	85.7767162732674
2003-04-01	85.5663421501926
2003-07-01	85.6027860891459
2003-10-01	85.6776660992946
2004-01-01	86.1701870092593
2004-04-01	86.1105914687633
2004-07-01	86.5810880088500
2004-10-01	86.5518264806753
2005-01-01	86.4163251972591
2005-04-01	86.3035663257800
2005-07-01	86.0781565591684
2005-10-01	86.7140050200524
2006-01-01	87.0033822416806
2006-04-01	87.0043928001132
2006-07-01	86.9825339521792
2006-10-01	87.3145774486401
2007-01-01	87.3340312073054
2007-04-01	88.6725325312231
2007-07-01	88.1771209049158
2007-10-01	88.4093971612646
2008-01-01	88.4398379030965
2008-04-01	88.5648181251984
2008-07-01	88.9792242640619
2008-10-01	88.4908755865812
2009-01-01	86.9386862843935
2009-04-01	86.6565909327330
2009-07-01	85.8689846599088
2009-10-01	86.1407868615951
2010-01-01	85.7652144743159
2010-04-01	85.3466868268336
2010-07-01	84.4830704513857
2010-10-01	85.2307474827728
2011-01-01	85.4391320226552
2011-04-01	84.4310736499950
2011-07-01	84.5988632093455
2011-10-01	84.7522159436200
2012-01-01	85.2376455133574
2012-04-01	85.0752011666769
2012-07-01	85.4985398558419
2012-10-01	85.7082350779310
2013-01-01	84.7990721630247
2013-04-01	83.6598058812058
2013-07-01	84.6703829074432
2013-10-01	84.2357200135617
2014-01-01	84.2826709692835
2014-04-01	84.7968636461230
2014-07-01	84.7370711700780
2014-10-01	84.5975541851402
2015-01-01	85.2057356135496
2015-04-01	85.9500713614623
2015-07-01	87.1533415863522
2015-10-01	86.0829480491709
2016-01-01	84.9018049204499
2016-04-01	85.3421518936088
2016-07-01	86.0609915895402
2016-10-01	86.2325927639730
2017-01-01	87.4317036866975
2017-04-01	88.7808276974387
2017-07-01	88.4997568656748
2017-10-01	89.3421325718624
2018-01-01	89.5848413813963
2018-04-01	89.6914130045463