Quarter	Percent, Seasonally Adjusted
1998-04-01	84.9338057057617
1999-04-01	85.1581205883268
2000-04-01	85.3844958831754
2001-04-01	86.0663124203723
2002-04-01	85.9841353128183
2003-04-01	84.8464373464374
2004-04-01	84.7237535219895
2005-04-01	85.0646972656250
2006-04-01	85.2262009796465
2007-04-01	86.0727691003754
2008-04-01	87.1929877045502
2009-04-01	86.6874981575922
2010-01-01	83.9263371402386
2010-04-01	84.2795803218840
2010-07-01	84.4061435335531
2010-10-01	84.6777650695284
2011-01-01	85.3063586235628
2011-04-01	85.5822677769911
2011-07-01	85.0429399944680
2011-10-01	85.6581937984488
2012-01-01	85.6878164532342
2012-04-01	85.7703281940950
2012-07-01	85.8297167061077
2012-10-01	85.6721146877470
2013-01-01	85.0091580898732
2013-04-01	85.0848205115604
2013-07-01	85.2598118620197
2013-10-01	85.5189982978431
2014-01-01	85.2022044826545
2014-04-01	85.7165565170461
2014-07-01	85.8050676339189
2014-10-01	86.4003693032437
2015-01-01	86.5224614514441
2015-04-01	86.2057931451120
2015-07-01	85.8255808722675
2015-10-01	86.5002835777268
2016-01-01	86.6231955618416
2016-04-01	86.1195402294837
2016-07-01	85.9956701017469
2016-10-01	86.4568832444428
2017-01-01	86.1551186365668
2017-04-01	86.1958269793911
2017-07-01	86.0640443623487
2017-10-01	86.3511074442943
2018-01-01	86.5006884776499
2018-04-01	86.2318557254246