Quarter	Percent, Seasonally Adjusted
1999-01-01	59.7025400599240
1999-04-01	59.5447484081572
1999-07-01	59.7758622331388
1999-10-01	59.8847089680540
2000-01-01	60.0734677748260
2000-04-01	59.9626510374969
2000-07-01	60.0060178227144
2000-10-01	60.1489430272670
2001-01-01	60.4583489573773
2001-04-01	60.6718106576354
2001-07-01	60.6076950756514
2001-10-01	60.3951853090524
2002-01-01	60.0989616765282
2002-04-01	59.9343039920337
2002-07-01	60.0178550456766
2002-10-01	60.1328755633952
2003-01-01	60.0966635999489
2003-04-01	60.2432174076930
2003-07-01	60.3351806674956
2003-10-01	60.2659440031374
2004-01-01	60.2068161843643
2004-04-01	60.3148836495099
2004-07-01	60.0636523735818
2004-10-01	59.8596464977454
2005-01-01	59.7401557239602
2005-04-01	59.4427257151066
2005-07-01	59.2318191333991
2005-10-01	59.5445964389630
2006-01-01	59.2042811748565
2006-04-01	59.2678661477597
2006-07-01	59.1648476207540
2006-10-01	58.9416795230954
2007-01-01	58.7980820430975
2007-04-01	58.8038318407134
2007-07-01	58.8009357990444
2007-10-01	58.9923068497789
2008-01-01	59.2063972015938
2008-04-01	59.3564875227848
2008-07-01	59.4846654655573
2008-10-01	59.1700551521920
2009-01-01	58.8450611333356
2009-04-01	58.7649656237056
2009-07-01	58.9261256491007
2009-10-01	58.9528218742100
2010-01-01	59.0160371626086
2010-04-01	58.9679464756582
2010-07-01	59.0028471914171
2010-10-01	58.9940094659388
2011-01-01	58.6591519363711
2011-04-01	58.7752249561542
2011-07-01	58.7357966095491
2011-10-01	58.9006803190749
2012-01-01	59.2089022998856
2012-04-01	59.3099313190500
2012-07-01	59.2925414480325
2012-10-01	59.0275730298605
2013-01-01	59.5091056908331
2013-04-01	59.2788528996235
2013-07-01	59.1959594162180
2013-10-01	59.1544086883645
2014-01-01	59.2995969209635
2014-04-01	59.2808594296928
2014-07-01	59.3353981693413
2014-10-01	59.4941881999948
2015-01-01	59.5984854404386
2015-04-01	59.4785334038546
2015-07-01	59.6494810455221
2015-10-01	59.8507946397958
2016-01-01	59.8879476897492
2016-04-01	60.1644972065435
2016-07-01	60.0952444399431
2016-10-01	60.0598829867310
2017-01-01	60.0257616253856
2017-04-01	59.9931897345118
2017-07-01	60.0016777920991
2017-10-01	59.7665533037319
2018-01-01	59.6701658608558
2018-04-01	59.7150411803158