Quarter	Percent, Seasonally Adjusted
1999-01-01	86.2263074020240
1999-04-01	86.1371939551013
1999-07-01	86.3485392553955
1999-10-01	86.6638713379526
2000-01-01	87.1215745885468
2000-04-01	87.8085001233623
2000-07-01	87.7457443262246
2000-10-01	86.6171558020282
2001-01-01	87.0199524715937
2001-04-01	86.4939411830352
2001-07-01	86.5866795299707
2001-10-01	85.9836634658719
2002-01-01	86.4710388227170
2002-04-01	86.2139477102490
2002-07-01	86.1429315239459
2002-10-01	85.4579106461687
2003-01-01	84.9435054064746
2003-04-01	84.4281444471703
2003-07-01	85.2157398133994
2003-10-01	85.3500151784048
2004-01-01	85.8956196381568
2004-04-01	85.6640581666317
2004-07-01	85.6098952195439
2004-10-01	85.9559875307696
2005-01-01	86.0159398975521
2005-04-01	85.9754633735757
2005-07-01	86.2045758294776
2005-10-01	86.2433618013424
2006-01-01	84.6698116011815
2006-04-01	85.4925726348241
2006-07-01	86.3436150469252
2006-10-01	87.0054421902582
2007-01-01	86.8822253899343
2007-04-01	86.8533368168928
2007-07-01	87.1954311090682
2007-10-01	86.9516168514844
2008-01-01	87.2258123138277
2008-04-01	87.2209939771444
2008-07-01	86.8683884919171
2008-10-01	86.8673705422606
2009-01-01	86.3642127025050
2009-04-01	85.3986964598801
2009-07-01	85.5332238840500
2009-10-01	85.3696351617752
2010-01-01	85.6963639239021
2010-04-01	85.3484159910900
2010-07-01	85.2947210092568
2010-10-01	85.8141668386434
2011-01-01	84.5375017788743
2011-04-01	85.8226360777330
2011-07-01	84.2632836529906
2011-10-01	84.8023285934978
2012-01-01	84.5771724302513
2012-04-01	84.7093972269041
2012-07-01	85.0130536412426
2012-10-01	83.7763878452698
2013-01-01	83.8474248544711
2013-04-01	84.6619612242161
2013-07-01	83.6753856641361
2013-10-01	83.7979280201763
2014-01-01	83.9604181619073
2014-04-01	82.9261891067057
2014-07-01	82.8433647561198
2014-10-01	83.2079828263205
2015-01-01	82.7651910846834
2015-04-01	82.4542503614979
2015-07-01	82.6813723701583
2015-10-01	82.3027932267098
2016-01-01	82.6634383065869
2016-04-01	83.7319581389396
2016-07-01	83.8630464075732
2016-10-01	84.7748455259406
2017-01-01	84.0704031205455
2017-04-01	84.3556940272053
2017-07-01	84.1213621208138
2017-10-01	85.0283094234705
2018-01-01	84.7577449403516
2018-04-01	84.5498355398077