Quarter	Percent, Seasonally Adjusted
1999-04-01	39.7351865880570
1999-07-01	39.4330657053908
1999-10-01	40.1747579146425
2000-01-01	40.9509600415153
2000-04-01	41.3961143742335
2000-07-01	42.0425723183613
2000-10-01	42.3167848699764
2001-01-01	42.6123720516244
2001-04-01	43.1179019961406
2001-07-01	42.9949717159020
2001-10-01	43.4481258158762
2002-01-01	43.9199163488744
2002-04-01	44.5864524374658
2002-07-01	44.5127648672273
2002-10-01	45.1495215311005
2003-01-01	45.3331751023557
2003-04-01	46.2634709381073
2003-07-01	46.7074097900462
2003-10-01	46.7808537862045
2004-01-01	46.6427621305882
2004-04-01	47.2433924822410
2004-07-01	46.6348079894695
2004-10-01	47.2936015041878
2005-01-01	47.8978723404255
2005-04-01	48.1518114508563
2005-07-01	47.7801209053845
2005-10-01	48.1249300347028
2006-01-01	48.4839212195393
2006-04-01	48.8877822045153
2006-07-01	49.1260476400529
2006-10-01	49.3719249058575
2007-01-01	49.0505028361604
2007-04-01	48.8365106243513
2007-07-01	48.5572600201629
2007-10-01	48.9380820127430
2008-01-01	48.8422025330217
2008-04-01	48.9582202930005
2008-07-01	48.7465105564138
2008-10-01	49.4778986095331
2009-01-01	49.2015455699965
2009-04-01	49.3361398963731
2009-07-01	49.0967428817947
2009-10-01	49.0980075390415
2010-01-01	49.7095837366893
2010-04-01	49.0428563746841
2010-07-01	49.9838978047340
2010-10-01	49.2240478168806
2011-01-01	49.5798094422439
2011-04-01	49.4002297560845
2011-07-01	49.7377575595397
2011-10-01	49.2830290010741
2012-01-01	50.4635368943028
2012-04-01	50.9493157353816
2012-07-01	50.9005227094223
2012-10-01	51.7817945313135
2013-01-01	52.0810173259944
2013-04-01	52.9600000000000
2013-07-01	53.0967217556218
2013-10-01	53.9001918348599
2014-01-01	54.1920690585379
2014-04-01	54.2712485187978
2014-07-01	54.0463668562842
2014-10-01	55.1709378845434
2015-01-01	55.5194112627986
2015-04-01	55.2969310482264
2015-07-01	56.2412342215989
2015-10-01	56.8448225904170
2016-01-01	56.8209836065574
2016-04-01	57.9928465133279
2016-07-01	57.0820242515514
2016-10-01	57.6822815847206
2017-01-01	58.5353963000026
2017-04-01	58.6913265306122
2017-07-01	59.0528612012987
2017-10-01	60.0035308062848
2018-01-01	60.1373881214431
2018-04-01	60.4097094153417