Quarter	Percent, Seasonally Adjusted
1999-01-01	38.2932420131403
1999-04-01	38.4328811331693
1999-07-01	38.7176315976008
1999-10-01	38.6832756565882
2000-01-01	38.2771300498413
2000-04-01	38.1727556366188
2000-07-01	38.4100268732820
2000-10-01	39.0152127462045
2001-01-01	39.0351003871450
2001-04-01	39.1197073150367
2001-07-01	38.7853545019440
2001-10-01	39.3378406052246
2002-01-01	39.1745316395266
2002-04-01	39.2256794559671
2002-07-01	39.3094609782737
2002-10-01	38.9370301832119
2003-01-01	40.0647901354330
2003-04-01	39.2736642397162
2003-07-01	39.6472369365635
2003-10-01	38.9312847344350
2004-01-01	38.9144367995907
2004-04-01	39.1889970997158
2004-07-01	38.1576571991196
2004-10-01	39.2480495114617
2005-01-01	38.4681398228487
2005-04-01	38.9546046646424
2005-07-01	38.5092487904625
2005-10-01	38.5473363673253
2006-01-01	39.2192468408696
2006-04-01	39.1990934014825
2006-07-01	39.6975670834520
2006-10-01	38.4619171466516
2007-01-01	38.3580119828101
2007-04-01	38.7793151113782
2007-07-01	39.2000266067565
2007-10-01	39.3188591510213
2008-01-01	38.8138002034664
2008-04-01	39.2923356362476
2008-07-01	38.8478516672810
2008-10-01	39.6595606780091
2009-01-01	39.3853176801268
2009-04-01	39.8890254120085
2009-07-01	39.7705743010267
2009-10-01	39.4546026082463
2010-01-01	39.2959333290192
2010-04-01	39.0464934266417
2010-07-01	39.0022384079940
2010-10-01	39.4776258870402
2011-01-01	40.4199001293318
2011-04-01	40.0481143609299
2011-07-01	40.5905155601950
2011-10-01	40.0817577815732
2012-01-01	40.1755868154347
2012-04-01	40.1778323823677
2012-07-01	40.2551426532620
2012-10-01	40.4324312442508
2013-01-01	40.4793045091681
2013-04-01	39.6916977377794
2013-07-01	40.4436532356256
2013-10-01	40.7236117271046
2014-01-01	40.5348668498392
2014-04-01	40.8084254711500
2014-07-01	41.0040433657178
2014-10-01	40.7489222480768
2015-01-01	40.6443237598946
2015-04-01	41.1375834615118
2015-07-01	41.1402714592754
2015-10-01	41.5257923911024
2016-01-01	41.5320092053023
2016-04-01	41.1717510642234
2016-07-01	41.2829522700700
2016-10-01	41.1109538113874
2017-01-01	41.0041989316320
2017-04-01	41.0441163992901
2017-07-01	40.5844388213377
2017-10-01	40.7093512094866
2018-01-01	40.9275155735520
2018-04-01	41.0703218479696