Quarter	Percent, Seasonally Adjusted
1999-01-01	87.2437964626185
1999-04-01	87.3672750168739
1999-07-01	86.8252289421018
1999-10-01	86.9356025563191
2000-01-01	87.1351660360554
2000-04-01	87.5546778027915
2000-07-01	87.7730821814883
2000-10-01	87.3199292526166
2001-01-01	87.4711644015014
2001-04-01	87.7304577696605
2001-07-01	88.3800275286119
2001-10-01	88.2761464236324
2002-01-01	88.9260607542314
2002-04-01	88.5652751388447
2002-07-01	87.7443285684814
2002-10-01	87.2198371379150
2003-01-01	87.3532328130434
2003-04-01	87.5767952731632
2003-07-01	87.4880022119859
2003-10-01	87.6917962983534
2004-01-01	88.0062015014438
2004-04-01	88.6680699145778
2004-07-01	89.1002547992616
2004-10-01	88.6199738819359
2005-01-01	88.7516429249581
2005-04-01	88.6378851544076
2005-07-01	88.3335356037861
2005-10-01	89.4400294056866
2006-01-01	89.2864506393470
2006-04-01	89.4360423617944
2006-07-01	88.7693761962436
2006-10-01	88.6718360109609
2007-01-01	88.9214663451594
2007-04-01	89.8596298696974
2007-07-01	89.0270895018895
2007-10-01	89.4915336313053
2008-01-01	89.7809714174052
2008-04-01	89.8653312694058
2008-07-01	90.3510937007980
2008-10-01	90.4267508964689
2009-01-01	89.5017567170223
2009-04-01	89.6655368490486
2009-07-01	89.5524743202665
2009-10-01	89.8499093327688
2010-01-01	90.1129542682310
2010-04-01	90.2964142959157
2010-07-01	89.1098764784582
2010-10-01	90.3523328519178
2011-01-01	90.5268784623710
2011-04-01	90.0143588314012
2011-07-01	89.7862969660500
2011-10-01	90.2317322990162
2012-01-01	90.6538124339227
2012-04-01	90.1411995862116
2012-07-01	91.2183953308737
2012-10-01	91.0464377498097
2013-01-01	91.1314246888249
2013-04-01	90.4696745783163
2013-07-01	90.6401450423331
2013-10-01	90.5061261405906
2014-01-01	90.9366734222052
2014-04-01	90.6870912802705
2014-07-01	90.0077021068476
2014-10-01	89.7338146313724
2015-01-01	90.2645713799902
2015-04-01	91.0683006076027
2015-07-01	91.5744666462368
2015-10-01	90.3202122504532
2016-01-01	89.7364238787142
2016-04-01	90.4425162751069
2016-07-01	90.5322832959226
2016-10-01	91.2412160043552
2017-01-01	91.4447738172741
2017-04-01	91.7498749123736
2017-07-01	92.0349333752793
2017-10-01	92.1783721259969
2018-01-01	91.7527457421864
2018-04-01	91.8126709199662