Quarter	Percent, Seasonally Adjusted
1999-01-01	33.6468871251654
1999-04-01	33.7612918880091
1999-07-01	32.4120640934943
1999-10-01	32.1707207582124
2000-01-01	33.6485171661104
2000-04-01	33.4487515712858
2000-07-01	36.7754507137169
2000-10-01	34.7004159799806
2001-01-01	37.1934899941180
2001-04-01	34.7100839437940
2001-07-01	37.8997234379714
2001-10-01	40.3219979266728
2002-01-01	38.9851410650768
2002-04-01	38.2821487140039
2002-07-01	35.0912564519683
2002-10-01	34.4386586851423
2003-01-01	33.9827064397881
2003-04-01	33.0017513292027
2003-07-01	32.6183204279053
2003-10-01	38.2435143494839
2004-01-01	40.2563735429687
2004-04-01	42.4753374691270
2004-07-01	43.0223771782825
2004-10-01	44.4165993357642
2005-01-01	43.5741435432768
2005-04-01	44.7530152016838
2005-07-01	46.9899309827880
2005-10-01	46.2601001785558
2006-01-01	47.4999488777889
2006-04-01	46.0804457295198
2006-07-01	44.1384598676448
2006-10-01	45.3271130690344
2007-01-01	43.2418975273142
2007-04-01	47.7319958201665
2007-07-01	48.3992753490063
2007-10-01	47.2365851155766
2008-01-01	45.4885622223784
2008-04-01	47.6470807077255
2008-07-01	46.0345337976328
2008-10-01	46.3491820818312
2009-01-01	46.2458452760698
2009-04-01	49.6224927193024
2009-07-01	48.4782622203113
2009-10-01	48.4636035308877
2010-01-01	49.1385733796512
2010-04-01	46.6550492253899
2010-07-01	48.4122257274850
2010-10-01	45.9516877855216
2011-01-01	42.5325729300009
2011-04-01	42.4880791952055
2011-07-01	43.3260232574462
2011-10-01	42.4531532522038
2012-01-01	42.8543840540862
2012-04-01	42.3115006152270
2012-07-01	43.5751630990611
2012-10-01	45.8314685519544
2013-01-01	45.2566549083609
2013-04-01	44.9330532187849
2013-07-01	45.4121375506485
2013-10-01	44.8922677891318
2014-01-01	43.2161307410606
2014-04-01	45.9530625647324
2014-07-01	46.3918054793121
2014-10-01	47.2242643119835
2015-01-01	45.5543265043953
2015-04-01	47.7392623126406
2015-07-01	46.3982455482264
2015-10-01	45.8079530761776
2016-01-01	45.7014145182092
2016-04-01	47.7515678419319
2016-07-01	46.4839598024571
2016-10-01	48.4535040181156
2017-01-01	50.3012899343172
2017-04-01	51.9162248922953
2017-07-01	52.1721562490453
2017-10-01	52.6699209574904
2018-01-01	52.5223782305007
2018-04-01	54.8073030979189