Quarter	Percent, Seasonally Adjusted
1998-01-01	79.5934832054286
1998-04-01	80.1766468657864
1998-07-01	79.9619170254987
1998-10-01	80.5825871009707
1999-01-01	80.5932761342790
1999-04-01	80.5013146663759
1999-07-01	80.6935464252034
1999-10-01	80.8033137151121
2000-01-01	81.3622215513220
2000-04-01	81.6355980598441
2000-07-01	81.9372082913382
2000-10-01	82.2727195663547
2001-01-01	82.5866685500770
2001-04-01	82.2074173374714
2001-07-01	82.1194816324256
2001-10-01	82.2478844079701
2002-01-01	81.8753179279574
2002-04-01	81.8308381343721
2002-07-01	81.7245488875674
2002-10-01	80.6313562328509
2003-01-01	80.7848222827399
2003-04-01	80.9365340237844
2003-07-01	81.0046579939872
2003-10-01	81.0598891494635
2004-01-01	81.2619649700427
2004-04-01	81.2321354006019
2004-07-01	80.9186846989642
2004-10-01	81.0235247153905
2005-01-01	80.7085633166884
2005-04-01	80.6553498835761
2005-07-01	80.5918705023194
2005-10-01	80.8353557860092
2006-01-01	81.2329245779088
2006-04-01	81.3858503718038
2006-07-01	81.2761218368694
2006-10-01	81.0869192093092
2007-01-01	80.7238706887814
2007-04-01	80.7420259392632
2007-07-01	80.9850144011614
2007-10-01	81.2129120765213
2008-01-01	81.6785197482756
2008-04-01	81.9677586795746
2008-07-01	81.3988550864658
2008-10-01	81.3767639999832
2009-01-01	80.5903498877827
2009-04-01	80.1819500467361
2009-07-01	78.8035328273740
2009-10-01	79.1236325897114
2010-01-01	79.6296728868626
2010-04-01	79.2088098305690
2010-07-01	79.1534217767414
2010-10-01	78.8296791679880
2011-01-01	78.2883146175842
2011-04-01	78.7157836941227
2011-07-01	77.5589754590378
2011-10-01	76.7181388014238
2012-01-01	76.5356845359991
2012-04-01	76.1165035515881
2012-07-01	75.0206133736469
2012-10-01	74.2537037046436
2013-01-01	73.9275017709388
2013-04-01	74.0341854499321
2013-07-01	74.6035221297619
2013-10-01	75.7450566027772
2014-01-01	76.3271176978550
2014-04-01	77.4562161001091
2014-07-01	77.4931491342515
2014-10-01	78.1756537609665
2015-01-01	78.1274119639090
2015-04-01	79.0243512545082
2015-07-01	78.7560756552131
2015-10-01	79.4938350305642
2016-01-01	79.4930368808074
2016-04-01	79.8786999696222
2016-07-01	80.4402813219479
2016-10-01	80.9583595298945
2017-01-01	81.3898346755197
2017-04-01	82.2926466427126
2017-07-01	82.9244840024085
2017-10-01	83.5558131898191
2018-01-01	83.8858065220355
2018-04-01	84.5561495387799