Quarter	Percent, Seasonally Adjusted
1998-01-01	88.7289121528756
1998-04-01	88.5457146854728
1998-07-01	88.3788689259760
1998-10-01	88.4228085295885
1999-01-01	88.5659043925629
1999-04-01	88.5543581031565
1999-07-01	88.5870397697312
1999-10-01	88.5652743580347
2000-01-01	88.5496580822922
2000-04-01	88.4470865748120
2000-07-01	88.3173048810057
2000-10-01	88.2571170837380
2001-01-01	88.6808548786582
2001-04-01	88.3547990162474
2001-07-01	88.3972444420320
2001-10-01	88.2517640008075
2002-01-01	88.1112566768101
2002-04-01	88.1823041153951
2002-07-01	88.2395894169315
2002-10-01	88.3332901414437
2003-01-01	88.0513871103411
2003-04-01	87.9537379621943
2003-07-01	87.5764851355955
2003-10-01	87.5406072866285
2004-01-01	87.6283676073107
2004-04-01	87.7407166972338
2004-07-01	87.8574945514269
2004-10-01	87.9197092250745
2005-01-01	87.9524795314397
2005-04-01	88.3685655632706
2005-07-01	88.4956145915540
2005-10-01	88.3365661850952
2006-01-01	88.4068854696948
2006-04-01	88.2004081511375
2006-07-01	88.0369772257945
2006-10-01	87.9659749791548
2007-01-01	87.9287354841828
2007-04-01	87.8221303067378
2007-07-01	87.7042076765076
2007-10-01	87.6841189319388
2008-01-01	87.4923813804896
2008-04-01	87.3516084008986
2008-07-01	87.2579813927840
2008-10-01	87.1289579787803
2009-01-01	87.2835476042688
2009-04-01	87.4988719117360
2009-07-01	87.8222501724075
2009-10-01	88.0489816832897
2010-01-01	87.8243079716858
2010-04-01	87.8810144272968
2010-07-01	87.8701936783720
2010-10-01	87.7158097022366
2011-01-01	87.8589499532129
2011-04-01	88.0713018583340
2011-07-01	88.0071578262614
2011-10-01	88.2428818678404
2012-01-01	88.0568385727611
2012-04-01	88.2209286415232
2012-07-01	88.5791337046125
2012-10-01	88.5673312869758
2013-01-01	88.7963800995560
2013-04-01	89.2877326251849
2013-07-01	89.1124705414614
2013-10-01	89.0467039464338
2014-01-01	88.9670031522659
2014-04-01	88.6896528376717
2014-07-01	88.5635746519743
2014-10-01	88.8559787533181
2015-01-01	88.8432789659147
2015-04-01	88.5503034036275
2015-07-01	88.5693668536196
2015-10-01	88.4882042348556
2016-01-01	88.7551461872353
2016-04-01	88.8460440745753
2016-07-01	88.8687259339194
2016-10-01	89.0690810681075
2017-01-01	88.8694105976828
2017-04-01	88.9625376143285
2017-07-01	89.2538001991666
2017-10-01	89.1546055289836
2018-01-01	89.0179777808673
2018-04-01	89.3077363063338