Quarter	Percent, Seasonally Adjusted
1999-04-01	46.3450555494994
1999-07-01	45.9502388474283
1999-10-01	45.8801247397614
2000-01-01	45.8946843027379
2000-04-01	45.5160575574766
2000-07-01	45.8388404011086
2000-10-01	46.0170650075305
2001-01-01	46.2850658780229
2001-04-01	46.9086022509311
2001-07-01	46.8030441688018
2001-10-01	47.5161847154617
2002-01-01	47.5504083694369
2002-04-01	48.1016340190406
2002-07-01	48.3245605874964
2002-10-01	48.1269575120497
2003-01-01	48.0288600979388
2003-04-01	47.5395927219255
2003-07-01	47.6373826843801
2003-10-01	47.6635204314257
2004-01-01	47.6088203252518
2004-04-01	48.0537574573999
2004-07-01	47.5837206028739
2004-10-01	47.1269435183953
2005-01-01	47.2701199764273
2005-04-01	46.8628961534092
2005-07-01	46.5584300578520
2005-10-01	46.1839137509453
2006-01-01	45.6225457140893
2006-04-01	45.3233655672280
2006-07-01	44.1829784802692
2006-10-01	44.9187688557436
2007-01-01	29.8263830776922
2007-04-01	29.3927259923541
2007-07-01	31.6979294245622
2007-10-01	31.5895608638204
2008-01-01	32.3141237557099
2008-04-01	33.0900806845719
2008-07-01	33.6220740241133
2008-10-01	37.1515908196715
2009-01-01	37.6150523747470
2009-04-01	38.6650709931161
2009-07-01	41.3989970808090
2009-10-01	42.1989196425817
2010-01-01	44.9140752646430
2010-04-01	45.8386237154872
2010-07-01	46.8010616633469
2010-10-01	47.0407754345637
2011-01-01	47.7755536316148
2011-04-01	49.1016257909424
2011-07-01	49.6958390415159
2011-10-01	47.9764219975802
2012-01-01	49.5096554169892
2012-04-01	49.6145528145970
2012-07-01	49.6806010320468
2012-10-01	50.0333004814954
2013-01-01	50.0953433769250
2013-04-01	49.4493088274865
2013-07-01	50.0764512827973
2013-10-01	50.8553030565099
2014-01-01	51.4437673710653
2014-04-01	52.4801756617386
2014-07-01	51.8650504603011
2014-10-01	52.0415498292388
2015-01-01	52.1013068258076
2015-04-01	53.0199625383323
2015-07-01	52.5971458557776
2015-10-01	52.5562540945785
2016-01-01	52.0564612865228
2016-04-01	47.8543818938266
2016-07-01	48.2765215664523
2016-10-01	49.4476285579019
2017-01-01	51.1060009263781
2017-04-01	51.9036971855949
2017-07-01	55.9946600136480
2017-10-01	54.0767586051549
2018-01-01	54.1220214419024
2018-04-01	53.7343797668778