Quarter	Percent, Seasonally Adjusted
1999-01-01	76.2413625705076
1999-04-01	76.6692095019619
1999-07-01	77.0988567286428
1999-10-01	77.4430209986038
2000-01-01	77.7371616287451
2000-04-01	77.9200649186959
2000-07-01	78.1569148351262
2000-10-01	78.3429347817894
2001-01-01	76.2422644594643
2001-04-01	76.3452818274124
2001-07-01	76.7001585007176
2001-10-01	77.0339976243270
2002-01-01	77.8067183348675
2002-04-01	78.4359005580092
2002-07-01	78.8829264106203
2002-10-01	78.9407356314808
2003-01-01	79.3873749502648
2003-04-01	79.7427789608203
2003-07-01	80.2250131352271
2003-10-01	80.4578103891197
2004-01-01	80.3976465970806
2004-04-01	80.7143183367790
2004-07-01	81.0518019153357
2004-10-01	81.3516013456978
2005-01-01	80.9094136330123
2005-04-01	81.2699312283589
2005-07-01	81.2009125238736
2005-10-01	81.5032406203505
2006-01-01	81.9262671612199
2006-04-01	82.1903794939442
2006-07-01	82.3740172698873
2006-10-01	82.6495402235918
2007-01-01	82.8413545377166
2007-04-01	83.0103600745923
2007-07-01	83.1645000009679
2007-10-01	83.3327811868645
2008-01-01	83.6463506689587
2008-04-01	83.9530809303342
2008-07-01	84.0199601104185
2008-10-01	84.4713303950752
2009-01-01	84.8353051938834
2009-04-01	84.7626494400088
2009-07-01	84.7015831484209
2009-10-01	84.9945034442669
2010-01-01	85.3299463442305
2010-04-01	85.7632163474274
2010-07-01	85.8431516266756
2010-10-01	85.8888300222665
2011-01-01	85.8973810760667
2011-04-01	86.2448759228635
2011-07-01	86.2942074774646
2011-10-01	86.3764339537892
2012-01-01	86.6836458146954
2012-04-01	86.7851170179452
2012-07-01	87.0501319208027
2012-10-01	87.0955547165989
2013-01-01	87.1276278009381
2013-04-01	87.0335026568375
2013-07-01	87.2448906712384
2013-10-01	87.2407174703711
2014-01-01	87.0511473622134
2014-04-01	87.3327449814471
2014-07-01	87.2820419523672
2014-10-01	87.5946555898658
2015-01-01	87.3077245173620
2015-04-01	87.6436518582372
2015-07-01	87.2101783194341
2015-10-01	87.2435926455225
2016-01-01	87.3500576290714
2016-04-01	87.4891235477490
2016-07-01	87.5248528984284
2016-10-01	87.2862979531379
2017-01-01	87.1861344509098
2017-04-01	86.9262787641022
2017-07-01	86.9672647330080
2017-10-01	86.9938289748097
2018-01-01	86.8366348251523
2018-04-01	86.9449682055723
2018-07-01	86.9366675808279