Quarter	Percent, Seasonally Adjusted
1999-01-01	42.9021923874370
1999-04-01	47.5748973526435
1999-07-01	47.8753940209677
1999-10-01	44.6962699733343
2000-01-01	45.8576436986909
2000-04-01	46.0310571193104
2000-07-01	47.3465157705195
2000-10-01	46.9354421717797
2001-01-01	47.1210067536925
2001-04-01	49.7925257789290
2001-07-01	49.4479447646001
2001-10-01	52.7176956367120
2002-01-01	49.5709546443169
2002-04-01	49.8852384704847
2002-07-01	51.5074367640912
2002-10-01	50.7621745246997
2003-01-01	52.2725072306473
2003-04-01	52.9094998768938
2003-07-01	53.5399590889213
2003-10-01	52.9915707263681
2004-01-01	53.3304922855684
2004-04-01	54.2191280231173
2004-07-01	53.6189257383782
2004-10-01	51.9472193475456
2005-01-01	53.4661828675160
2005-04-01	52.8193435956895
2005-07-01	52.6072040838740
2005-10-01	55.1778284654432
2006-01-01	54.7316066330065
2006-04-01	53.5199417770596
2006-07-01	54.6229916432906
2006-10-01	54.2488718246227
2007-01-01	52.8719629352496
2007-04-01	53.6101531801622
2007-07-01	53.8901327008871
2007-10-01	51.3695348662692
2008-01-01	51.8585529571076
2008-04-01	52.9696209995985
2008-07-01	51.9220735086036
2008-10-01	49.2622845555594
2009-01-01	49.8995346696217
2009-04-01	52.7501096745847
2009-07-01	52.0448249010568
2009-10-01	52.0694520473784
2010-01-01	52.7101607943318
2010-04-01	54.1586060474084
2010-07-01	54.7698864818029
2010-10-01	52.9382689462257
2011-01-01	54.8687798596823
2011-04-01	55.1519170490257
2011-07-01	55.4034044042989
2011-10-01	55.8044058041369
2012-01-01	56.0588155703114
2012-04-01	56.4746312766554
2012-07-01	55.3764725189182
2012-10-01	55.2941559784791
2013-01-01	55.2801280705980
2013-04-01	57.2516845484911
2013-07-01	57.9241555194150
2013-10-01	56.9198145696269
2014-01-01	56.1887715809653
2014-04-01	57.4656639133607
2014-07-01	57.6119631235044
2014-10-01	59.1343515016817
2015-01-01	59.5314823128592
2015-04-01	60.2057661013300
2015-07-01	58.6059603363697
2015-10-01	59.9412582939642
2016-01-01	61.6778751974970
2016-04-01	64.8606265488090
2016-07-01	63.6833343780261
2016-10-01	64.2712167232104
2017-01-01	64.0735852033124
2017-04-01	65.5017253213594
2017-07-01	65.9082485747188
2017-10-01	65.2259821434168
2018-01-01	64.6521812129610
2018-04-01	65.6854898830620