Quarter	Percent, Seasonally Adjusted
1999-04-01	53.6549444505006
1999-07-01	54.0497611525717
1999-10-01	54.1198752602386
2000-01-01	54.1053156972621
2000-04-01	54.4839424425234
2000-07-01	54.1611595988914
2000-10-01	53.9829349924695
2001-01-01	53.7149341219771
2001-04-01	53.0913977490689
2001-07-01	53.1969558311982
2001-10-01	52.4838152845383
2002-01-01	52.4495916305631
2002-04-01	51.8983659809594
2002-07-01	51.6754394125036
2002-10-01	51.8730424879503
2003-01-01	51.9711399020612
2003-04-01	52.4604072780745
2003-07-01	52.3626173156199
2003-10-01	52.3364795685743
2004-01-01	52.3911796747482
2004-04-01	51.9462425426001
2004-07-01	52.4162793971261
2004-10-01	52.8730564816047
2005-01-01	52.7298800235727
2005-04-01	53.1371038465908
2005-07-01	53.4415699421480
2005-10-01	53.8160862490547
2006-01-01	54.3774542859107
2006-04-01	54.6766344327720
2006-07-01	55.8170215197308
2006-10-01	55.0812311442564
2007-01-01	70.1736169223078
2007-04-01	70.6072740076459
2007-07-01	68.3020705754378
2007-10-01	68.4104391361796
2008-01-01	67.6858762442902
2008-04-01	66.9099193154281
2008-07-01	66.3779259758867
2008-10-01	62.8484091803285
2009-01-01	62.3849476252530
2009-04-01	61.3349290068839
2009-07-01	58.6010029191910
2009-10-01	57.8010803574183
2010-01-01	55.0859247353570
2010-04-01	54.1613762845128
2010-07-01	53.1989383366531
2010-10-01	52.9592245654363
2011-01-01	52.2244463683852
2011-04-01	50.8983742090576
2011-07-01	50.3041609584841
2011-10-01	52.0235780024198
2012-01-01	50.4903445830108
2012-04-01	50.3854471854030
2012-07-01	50.3193989679532
2012-10-01	49.9666995185046
2013-01-01	49.9046566230750
2013-04-01	50.5506911725135
2013-07-01	49.9235487172027
2013-10-01	49.1446969434901
2014-01-01	48.5562326289347
2014-04-01	47.5198243382614
2014-07-01	48.1349495396989
2014-10-01	47.9584501707611
2015-01-01	47.8986931741924
2015-04-01	46.9800374616677
2015-07-01	47.4028541442225
2015-10-01	47.4437459054215
2016-01-01	47.9435387134773
2016-04-01	52.1456181061734
2016-07-01	51.7234784335477
2016-10-01	50.5523714420981
2017-01-01	48.8939990736219
2017-04-01	48.0963028144051
2017-07-01	44.0053399863520
2017-10-01	45.9232413948451
2018-01-01	45.8779785580976
2018-04-01	46.2656202331222