Quarter	Percent, Seasonally Adjusted
1998-01-01	83.9373059052904
1998-04-01	83.9083800750012
1998-07-01	83.6349727576154
1998-10-01	84.1280738933604
1999-01-01	84.0875129699566
1999-04-01	84.1796644902054
1999-07-01	84.1670999965469
1999-10-01	84.1384111774293
2000-01-01	84.5482243303734
2000-04-01	84.6031964655675
2000-07-01	85.0644217134308
2000-10-01	85.0582234749290
2001-01-01	85.5984770566700
2001-04-01	85.1291243281634
2001-07-01	85.0843301175884
2001-10-01	85.2340080189891
2002-01-01	85.0450320990312
2002-04-01	85.3714888638269
2002-07-01	85.5406521102318
2002-10-01	85.3208545958217
2003-01-01	85.7426712355011
2003-04-01	85.9931867921576
2003-07-01	85.8981083388026
2003-10-01	86.0048799918272
2004-01-01	86.0586884097382
2004-04-01	86.3139384853765
2004-07-01	86.2730930881101
2004-10-01	86.6183578207546
2005-01-01	86.7617340824928
2005-04-01	86.7806218979811
2005-07-01	87.0457542802083
2005-10-01	87.4087922983558
2006-01-01	87.5745294127490
2006-04-01	87.7279968468574
2006-07-01	87.5894249135432
2006-10-01	87.7999005941253
2007-01-01	87.6899325469387
2007-04-01	87.6245084586557
2007-07-01	87.8215806073182
2007-10-01	87.7256788719110
2008-01-01	87.8832541269063
2008-04-01	88.1820864913472
2008-07-01	87.8583947588903
2008-10-01	87.8800621792135
2009-01-01	87.8990994217676
2009-04-01	88.0016690813645
2009-07-01	87.3608419507136
2009-10-01	87.8804267592713
2010-01-01	88.6909133082836
2010-04-01	88.6454841151333
2010-07-01	88.7563180808476
2010-10-01	88.5913952573355
2011-01-01	88.4826906397331
2011-04-01	88.9544056070161
2011-07-01	87.9939161891716
2011-10-01	88.0005578758139
2012-01-01	88.3975417548245
2012-04-01	88.8009049839072
2012-07-01	88.5155920885054
2012-10-01	88.2289036760063
2013-01-01	88.2090668015974
2013-04-01	88.1669949789964
2013-07-01	87.9811816066848
2013-10-01	88.6937268184209
2014-01-01	88.3231943194916
2014-04-01	89.0034014751453
2014-07-01	88.4560030264492
2014-10-01	88.7175279779427
2015-01-01	88.6200297283124
2015-04-01	88.9334196522723
2015-07-01	88.5609304067075
2015-10-01	89.0229759683818
2016-01-01	89.1402690419403
2016-04-01	88.7592053577917
2016-07-01	89.4532939864192
2016-10-01	89.1750473874899
2017-01-01	89.2290017755084
2017-04-01	89.5960134876376
2017-07-01	89.7341355122882
2017-10-01	89.8251627589264
2018-01-01	89.8957603815352
2018-04-01	89.9922406305690