Quarter	Percent, Seasonally Adjusted
1999-01-01	88.9096775012305
1999-04-01	89.0751835714616
1999-07-01	88.4933443790670
1999-10-01	88.0426015788574
2000-01-01	88.1985402940311
2000-04-01	88.2520840981631
2000-07-01	89.0119917708758
2000-10-01	88.5629361383983
2001-01-01	87.9934894551423
2001-04-01	88.6707224364794
2001-07-01	88.1479399444148
2001-10-01	87.8477049731215
2002-01-01	88.1006428124251
2002-04-01	88.5728644153840
2002-07-01	88.1730733261508
2002-10-01	88.5707953138114
2003-01-01	88.5979149185602
2003-04-01	87.8609499320845
2003-07-01	87.6624486335074
2003-10-01	87.4120913271154
2004-01-01	87.8520590009511
2004-04-01	87.3685836713397
2004-07-01	87.0464958692251
2004-10-01	87.9612248362302
2005-01-01	87.5062663325131
2005-04-01	88.0636745459524
2005-07-01	88.6668414235936
2005-10-01	89.1156098577234
2006-01-01	90.0692768834523
2006-04-01	89.6056599412778
2006-07-01	90.0446215915620
2006-10-01	90.4847116188570
2007-01-01	89.8770673365383
2007-04-01	90.0201848323399
2007-07-01	89.4750243871107
2007-10-01	89.9440046163749
2008-01-01	90.6808381687768
2008-04-01	91.4351044082994
2008-07-01	91.6251289061374
2008-10-01	90.0534567680184
2009-01-01	88.5787168747030
2009-04-01	87.0602225198977
2009-07-01	86.1623689419994
2009-10-01	85.6717882628795
2010-01-01	84.9942819086107
2010-04-01	84.6434507141071
2010-07-01	85.6118284385886
2010-10-01	86.0630836861136
2011-01-01	85.4780859182004
2011-04-01	86.0168971996809
2011-07-01	86.1283016608498
2011-10-01	85.3010963449611
2012-01-01	85.0246996102986
2012-04-01	84.2855470354658
2012-07-01	84.5710855968048
2012-10-01	84.6528371971093
2013-01-01	85.1250810243180
2013-04-01	85.2781445686625
2013-07-01	84.4263130815263
2013-10-01	85.1226604448808
2014-01-01	84.9556235739973
2014-04-01	85.8050430098476
2014-07-01	85.6677592469746
2014-10-01	85.3888877672361
2015-01-01	85.4810261278801
2015-04-01	85.5564633962001
2015-07-01	86.1617982015992
2015-10-01	86.4113039899424
2016-01-01	87.2824656910100
2016-04-01	86.4688248024270
2016-07-01	86.1773462197516
2016-10-01	85.8133075925988
2017-01-01	84.9557561006200
2017-04-01	84.9101361761321
2017-07-01	85.3332300170343
2017-10-01	85.4865909905221
2018-01-01	86.1872108101371
2018-04-01	86.2062742215126