Quarter	Percent, Seasonally Adjusted
1998-01-01	51.4944172688461
1998-04-01	51.2664078541890
1998-07-01	50.6868311719795
1998-10-01	50.3593004938418
1999-01-01	49.5728042382393
1999-04-01	49.7903292343884
1999-07-01	49.8998366676764
1999-10-01	49.5108298526384
2000-01-01	49.8300683128896
2000-04-01	49.6183654397054
2000-07-01	49.2906623802860
2000-10-01	49.2648586150129
2001-01-01	49.7751508023596
2001-04-01	50.3987908534717
2001-07-01	50.2927264798488
2001-10-01	50.3788932770624
2002-01-01	49.6159547655551
2002-04-01	49.0051950270314
2002-07-01	48.4887289444289
2002-10-01	48.1826770576155
2003-01-01	48.1562344638590
2003-04-01	47.9595490165092
2003-07-01	47.5287395847314
2003-10-01	47.1831890345061
2004-01-01	46.1174509294302
2004-04-01	45.8969055213266
2004-07-01	45.7989037505552
2004-10-01	45.5640589347152
2005-01-01	45.9078889690737
2005-04-01	45.5630166802495
2005-07-01	45.4528614093982
2005-10-01	45.1970840949326
2006-01-01	45.1507061292750
2006-04-01	45.1812170938051
2006-07-01	44.8250049584637
2006-10-01	45.0119795345641
2007-01-01	45.0710317697741
2007-04-01	45.1160114675430
2007-07-01	45.2560609350241
2007-10-01	45.1937159983758
2008-01-01	45.2596968257305
2008-04-01	45.0947186169645
2008-07-01	45.0428563176855
2008-10-01	44.5552505185974
2009-01-01	43.9163485146743
2009-04-01	43.7206488629658
2009-07-01	43.2755850146554
2009-10-01	43.1624473442701
2010-01-01	42.7614213845856
2010-04-01	42.5116282033113
2010-07-01	42.4054196336724
2010-10-01	42.3063108409043
2011-01-01	42.5064399230864
2011-04-01	42.8235398546252
2011-07-01	42.7372038772319
2011-10-01	42.0571459523297
2012-01-01	42.0121079760141
2012-04-01	41.8520075843059
2012-07-01	41.5042504211445
2012-10-01	41.4923271130744
2013-01-01	41.9320468958133
2013-04-01	41.4159026745654
2013-07-01	41.5233010188222
2013-10-01	41.8839580362237
2014-01-01	41.1877124591638
2014-04-01	40.9844844237645
2014-07-01	40.9544957279046
2014-10-01	40.8370867125949
2015-01-01	40.5531166935560
2015-04-01	40.1760989107715
2015-07-01	39.8891764850882
2015-10-01	39.7104985809980
2016-01-01	39.5929049394049
2016-04-01	39.6466862948456
2016-07-01	39.2858107590012
2016-10-01	39.6786268794346
2017-01-01	39.6666937896500
2017-04-01	39.4787054783270
2017-07-01	39.9239401300135
2017-10-01	39.9212027908612
2018-01-01	40.2341231376498
2018-04-01	39.9013195105978