Quarter	Percent, Seasonally Adjusted
1998-04-01	87.2400835073069
1999-04-01	87.2029630862708
2000-04-01	87.3002732014240
2001-04-01	87.6287385680152
2002-04-01	86.1925708699902
2003-04-01	85.0679462881568
2004-04-01	84.4478196570606
2005-04-01	83.9410272669626
2006-04-01	84.7082415854042
2007-04-01	85.5660046045187
2008-04-01	85.4238854238854
2009-04-01	84.4007128502635
2010-01-01	82.7590741336465
2010-04-01	83.0627404766591
2010-07-01	83.4554260716479
2010-10-01	83.5605210552353
2011-01-01	84.0812491981699
2011-04-01	83.9785011873512
2011-07-01	84.2277645382754
2011-10-01	83.9624169183175
2012-01-01	84.0454593147776
2012-04-01	84.1021047567219
2012-07-01	83.9269647722107
2012-10-01	83.5298072712789
2013-01-01	83.6674610317442
2013-04-01	83.4456752826815
2013-07-01	83.3097961696977
2013-10-01	83.4579732942555
2014-01-01	83.1111683290484
2014-04-01	83.1184360496009
2014-07-01	83.3842979012317
2014-10-01	83.8230117687464
2015-01-01	83.8195234675126
2015-04-01	83.5744120163475
2015-07-01	83.4290257074639
2015-10-01	83.5360062323258
2016-01-01	83.5714026527169
2016-04-01	83.5550961422862
2016-07-01	83.7293673495986
2016-10-01	84.0044114117402
2017-01-01	83.9365463212176
2017-04-01	84.4349440569464
2017-07-01	84.3788548565214
2017-10-01	84.3292546452375
2018-01-01	84.3150288518546
2018-04-01	84.4053204033561