Quarter	Percent, Seasonally Adjusted
1999-07-01	56.9146524665608
1999-10-01	57.2320317070601
2000-01-01	57.3107232131925
2000-04-01	57.5027516394313
2000-07-01	58.1972736567367
2000-10-01	58.2785331028168
2001-01-01	58.2420102881198
2001-04-01	58.5143009734414
2001-07-01	58.3711265419816
2001-10-01	58.5997162813833
2002-01-01	58.9580165648710
2002-04-01	59.1887990882002
2002-07-01	59.2443426172059
2002-10-01	58.9127332775167
2003-01-01	58.2540446476635
2003-04-01	58.3697179303356
2003-07-01	58.4250855991536
2003-10-01	58.7125049272535
2004-01-01	59.7895280534581
2004-04-01	59.7604417588162
2004-07-01	59.7735214895218
2004-10-01	59.8105548262664
2005-01-01	59.8445587988565
2005-04-01	60.0199358883335
2005-07-01	60.5494145502892
2005-10-01	61.1682289626338
2006-01-01	61.4354826087551
2006-04-01	61.4981090932652
2006-07-01	61.6496661233354
2006-10-01	61.6125060367139
2007-01-01	61.8140533643469
2007-04-01	61.9371447674649
2007-07-01	62.0271673223346
2007-10-01	62.3164251100816
2008-01-01	62.2629390770257
2008-04-01	62.3652942572088
2008-07-01	62.2148032337335
2008-10-01	62.3666882309452
2009-01-01	61.7232157392091
2009-04-01	61.3742332949835
2009-07-01	61.4834146895323
2009-10-01	61.5938531679991
2010-01-01	61.9705677184263
2010-04-01	61.9450622265594
2010-07-01	62.4352034705806
2010-10-01	62.3414790948049
2011-01-01	62.5713715606122
2011-04-01	63.1139142950503
2011-07-01	62.5188634026037
2011-10-01	62.7436888838580
2012-01-01	62.8608829583247
2012-04-01	62.8767768747331
2012-07-01	62.9235306387329
2012-10-01	62.7146394642584
2013-01-01	62.6409944776754
2013-04-01	63.2273458388244
2013-07-01	63.7617172816971
2013-10-01	63.9527077543749
2014-01-01	64.4340915065957
2014-04-01	64.8048184070611
2014-07-01	64.8338267817036
2014-10-01	64.9373674664762
2015-01-01	65.1096900005576
2015-04-01	65.2375185529718
2015-07-01	65.4645150529202
2015-10-01	65.7024827748339
2016-01-01	65.7883709944095
2016-04-01	65.6939281597329
2016-07-01	66.0230740620182
2016-10-01	66.2714819171111
2017-01-01	66.6102991503500
2017-04-01	66.5190420110191
2017-07-01	66.6427387834888
2017-10-01	66.7901393275994
2018-01-01	67.0575745216654
2018-04-01	67.3579798442807
2018-07-01	67.5321987843970