Quarter	Percent, Seasonally Adjusted
1999-01-01	84.8648282254409
1999-04-01	84.7243518996308
1999-07-01	84.5479614344836
1999-10-01	84.6784815350139
2000-01-01	85.2282129519110
2000-04-01	85.1527809088562
2000-07-01	85.3222657205314
2000-10-01	85.4626174264277
2001-01-01	85.2623841680200
2001-04-01	85.3626745529948
2001-07-01	85.3327501622554
2001-10-01	85.8216860852844
2002-01-01	86.4327242209342
2002-04-01	86.5032676451773
2002-07-01	86.5335024984938
2002-10-01	87.0191029916693
2003-01-01	87.2138700205135
2003-04-01	87.3080303482750
2003-07-01	87.4509069680482
2003-10-01	87.2089784299783
2004-01-01	85.4187210513916
2004-04-01	85.4075462971916
2004-07-01	85.6621083229477
2004-10-01	85.3516604648844
2005-01-01	85.4219000206223
2005-04-01	85.6876895663080
2005-07-01	85.9507377728424
2005-10-01	85.8340020996056
2006-01-01	86.0060012385880
2006-04-01	86.2209207842634
2006-07-01	86.1867040555968
2006-10-01	86.1319413932297
2007-01-01	86.3967537134911
2007-04-01	86.4089828269306
2007-07-01	86.7468528819599
2007-10-01	86.5827673076430
2008-01-01	86.4318277261334
2008-04-01	86.6245467998503
2008-07-01	86.3869417957356
2008-10-01	86.5881722295886
2009-01-01	86.8082217405670
2009-04-01	86.9878347112221
2009-07-01	87.1116612015496
2009-10-01	87.0087063648016
2010-01-01	86.8786600725688
2010-04-01	87.0505362874886
2010-07-01	87.1333133090589
2010-10-01	87.4792087787389
2011-01-01	87.3817459252724
2011-04-01	87.4206182048304
2011-07-01	87.5428471615423
2011-10-01	88.0459371934930
2012-01-01	88.0542806102023
2012-04-01	88.2192786853177
2012-07-01	88.1851077782951
2012-10-01	88.1235919962919
2013-01-01	88.4501456778386
2013-04-01	88.2756643840212
2013-07-01	88.4744785010029
2013-10-01	88.0702451286772
2014-01-01	88.0932941276412
2014-04-01	88.1185542274747
2014-07-01	87.9495137268066
2014-10-01	87.8288176774084
2015-01-01	87.9065401184574
2015-04-01	87.9025972195885
2015-07-01	87.9409527746554
2015-10-01	88.3060694642436
2016-01-01	88.2181539618906
2016-04-01	88.3907323246684
2016-07-01	88.5404961271078
2016-10-01	88.3168126323613
2017-01-01	88.5330865144605
2017-04-01	88.7018513043956
2017-07-01	88.5780135381067
2017-10-01	88.8383289469951
2018-01-01	88.6939270536852
2018-04-01	88.5708222769520