Quarter	Percent, Seasonally Adjusted
1999-04-01	56.1314232823096
1999-07-01	56.6106156654439
1999-10-01	57.0056773968974
2000-01-01	56.8729812565308
2000-04-01	56.7196979914872
2000-07-01	56.8108730037312
2000-10-01	56.1127940775412
2001-01-01	56.3928805049204
2001-04-01	56.5122708392557
2001-07-01	56.7241565880935
2001-10-01	56.8162271991534
2002-01-01	56.4177258431479
2002-04-01	56.6052834833334
2002-07-01	55.9667113957461
2002-10-01	55.8368115275921
2003-01-01	55.7270549600008
2003-04-01	55.2863839459716
2003-07-01	55.0271679415417
2003-10-01	55.7652966788049
2004-01-01	56.0633122972444
2004-04-01	56.0231289587877
2004-07-01	55.2578353423836
2004-10-01	55.0638267386791
2005-01-01	55.3702702403496
2005-04-01	54.3483301379322
2005-07-01	54.0824535460342
2005-10-01	53.3536374630301
2006-01-01	53.4935300170393
2006-04-01	53.6658399855487
2006-07-01	53.8390758476431
2006-10-01	53.5034148367147
2007-01-01	52.8088602443103
2007-04-01	52.3158618092561
2007-07-01	52.3938155880850
2007-10-01	52.9811372854598
2008-01-01	52.7953770579036
2008-04-01	52.4963340107935
2008-07-01	51.8657006296645
2008-10-01	51.0128392287358
2009-01-01	49.4719681909431
2009-04-01	48.1360841690842
2009-07-01	47.1956141563271
2009-10-01	46.7786713031132
2010-01-01	46.3862854750873
2010-04-01	47.0793795919728
2010-07-01	47.5697836410994
2010-10-01	46.2667582482204
2011-01-01	46.1692307944516
2011-04-01	46.2253147592292
2011-07-01	45.4463312495750
2011-10-01	45.4321472527223
2012-01-01	45.4263600182071
2012-04-01	46.2033885354448
2012-07-01	46.4001271435176
2012-10-01	46.7620361085803
2013-01-01	46.3926588687366
2013-04-01	45.5605768586727
2013-07-01	46.4304805605102
2013-10-01	46.6504638679083
2014-01-01	46.8234567780690
2014-04-01	48.1837969459831
2014-07-01	48.4729410731579
2014-10-01	48.5291541603841
2015-01-01	49.2773896662668
2015-04-01	49.5058038548819
2015-07-01	50.3967387746455
2015-10-01	50.6890418328323
2016-01-01	50.8187013070820
2016-04-01	50.8246303278146
2016-07-01	50.7116269920111
2016-10-01	51.0037672678600
2017-01-01	51.0188548619028
2017-04-01	50.8797219341972
2017-07-01	50.2239776742375
2017-10-01	50.5390166199573
2018-01-01	50.9939306463458
2018-04-01	50.8050069218450