Quarter	Percent, Seasonally Adjusted
1998-01-01	86.6782489486663
1998-04-01	86.7071190721766
1998-07-01	87.4476522096810
1998-10-01	87.1721032530684
1999-01-01	87.5435901297105
1999-04-01	87.7785749117597
1999-07-01	87.6273370539854
1999-10-01	87.9307800665705
2000-01-01	87.6110270396628
2000-04-01	87.9228630339015
2000-07-01	88.1858474293575
2000-10-01	87.8042627613072
2001-01-01	87.8128167460115
2001-04-01	87.9722882280258
2001-07-01	87.7923545674680
2001-10-01	88.3218564233044
2002-01-01	88.2701664645746
2002-04-01	88.1858701648362
2002-07-01	87.8736543058066
2002-10-01	87.6788827964535
2003-01-01	87.6220355279837
2003-04-01	87.6600187863320
2003-07-01	87.0422593773593
2003-10-01	87.5316965131710
2004-01-01	87.2990750562462
2004-04-01	87.1175483553303
2004-07-01	87.5980738120077
2004-10-01	87.4738050972198
2005-01-01	87.8799453637144
2005-04-01	87.7468704037746
2005-07-01	87.4063634355602
2005-10-01	87.7373276359680
2006-01-01	87.9157445164379
2006-04-01	87.6262312079064
2006-07-01	87.9992327121880
2006-10-01	87.6518656104726
2007-01-01	87.7628186478676
2007-04-01	88.0703071474666
2007-07-01	88.1574632428235
2007-10-01	88.1851380118580
2008-01-01	88.6074164983699
2008-04-01	88.6986293568463
2008-07-01	88.5405380042247
2008-10-01	88.5390946838885
2009-01-01	88.3959412005734
2009-04-01	88.2124277217119
2009-07-01	88.1040484879015
2009-10-01	88.1581368422338
2010-01-01	87.7593963525920
2010-04-01	87.6219903954336
2010-07-01	87.4587203797811
2010-10-01	87.2337181344409
2011-01-01	87.5345267872974
2011-04-01	87.3407013586042
2011-07-01	87.6928218278215
2011-10-01	88.0426914360308
2012-01-01	87.4434985938708
2012-04-01	87.2056476897367
2012-07-01	87.6268170906577
2012-10-01	86.9653056138787
2013-01-01	86.8826318129291
2013-04-01	86.9790834814599
2013-07-01	86.6201316878010
2013-10-01	86.5345984409720
2014-01-01	86.4813096418181
2014-04-01	86.9351638222214
2014-07-01	86.7610925412298
2014-10-01	86.3363249221626
2015-01-01	86.5641231660078
2015-04-01	86.4824601444508
2015-07-01	86.8892663777199
2015-10-01	86.6079560085272
2016-01-01	86.6395526428962
2016-04-01	86.4099934453999
2016-07-01	86.1371460529384
2016-10-01	86.0652780576244
2017-01-01	86.3796797725892
2017-04-01	86.6269751651975
2017-07-01	86.4871085522172
2017-10-01	87.5643687231932
2018-01-01	87.3998659811918
2018-04-01	87.5254089807384