Quarter	Percent, Seasonally Adjusted
1999-01-01	61.7067579868597
1999-04-01	61.5671188668307
1999-07-01	61.2823684023992
1999-10-01	61.3167243434118
2000-01-01	61.7228699501587
2000-04-01	61.8272443633812
2000-07-01	61.5899731267180
2000-10-01	60.9847872537955
2001-01-01	60.9648996128550
2001-04-01	60.8802926849633
2001-07-01	61.2146454980560
2001-10-01	60.6621593947754
2002-01-01	60.8254683604734
2002-04-01	60.7743205440329
2002-07-01	60.6905390217264
2002-10-01	61.0629698167881
2003-01-01	59.9352098645669
2003-04-01	60.7263357602838
2003-07-01	60.3527630634365
2003-10-01	61.0687152655650
2004-01-01	61.0855632004093
2004-04-01	60.8110029002842
2004-07-01	61.8423428008804
2004-10-01	60.7519504885383
2005-01-01	61.5318601771513
2005-04-01	61.0453953353576
2005-07-01	61.4907512095375
2005-10-01	61.4526636326747
2006-01-01	60.7807531591304
2006-04-01	60.8009065985175
2006-07-01	60.3024329165480
2006-10-01	61.5380828533484
2007-01-01	61.6419880171899
2007-04-01	61.2206848886218
2007-07-01	60.7999733932435
2007-10-01	60.6811408489787
2008-01-01	61.1861997965336
2008-04-01	60.7076643637524
2008-07-01	61.1521483327190
2008-10-01	60.3404393219909
2009-01-01	60.6146823198732
2009-04-01	60.1109745879915
2009-07-01	60.2294256989733
2009-10-01	60.5453973917537
2010-01-01	60.7040666709808
2010-04-01	60.9535065733582
2010-07-01	60.9977615920060
2010-10-01	60.5223741129598
2011-01-01	59.5800998706682
2011-04-01	59.9518856390701
2011-07-01	59.4094844398050
2011-10-01	59.9182422184268
2012-01-01	59.8244131845653
2012-04-01	59.8221676176323
2012-07-01	59.7448573467380
2012-10-01	59.5675687557492
2013-01-01	59.5206954908319
2013-04-01	60.3083022622206
2013-07-01	59.5563467643744
2013-10-01	59.2763882728954
2014-01-01	59.4651331501608
2014-04-01	59.1915745288500
2014-07-01	58.9959566342822
2014-10-01	59.2510777519232
2015-01-01	59.3556762401054
2015-04-01	58.8624165384882
2015-07-01	58.8597285407246
2015-10-01	58.4742076088976
2016-01-01	58.4679907946977
2016-04-01	58.8282489357766
2016-07-01	58.7170477299300
2016-10-01	58.8890461886126
2017-01-01	58.9958010683680
2017-04-01	58.9558836007100
2017-07-01	59.4155611786623
2017-10-01	59.2906487905134
2018-01-01	59.0724844264480
2018-04-01	58.9296781520304