Quarter	Percent, Seasonally Adjusted
1999-04-01	37.2726326760363
1999-07-01	37.0206543142601
1999-10-01	36.3318673311598
2000-01-01	35.9014516518820
2000-04-01	35.3380490109345
2000-07-01	35.2562988154881
2000-10-01	34.8556028164127
2001-01-01	34.6484375513946
2001-04-01	34.1894430223848
2001-07-01	33.6569165391282
2001-10-01	33.3639658755050
2002-01-01	32.8783039589266
2002-04-01	32.5538297891546
2002-07-01	33.4225323359858
2002-10-01	33.3402595150273
2003-01-01	33.0258695304611
2003-04-01	32.9351401354730
2003-07-01	32.7986093325461
2003-10-01	32.5056910949230
2004-01-01	32.3714840897686
2004-04-01	32.1616411723403
2004-07-01	32.0981142813557
2004-10-01	31.4015851900822
2005-01-01	30.8918897680467
2005-04-01	30.5088800318689
2005-07-01	30.1961283540150
2005-10-01	30.0121081989580
2006-01-01	29.8241767976805
2006-04-01	29.8813469889531
2006-07-01	29.4618459759402
2006-10-01	29.0082710992191
2007-01-01	27.7980899653757
2007-04-01	27.6048834347793
2007-07-01	27.4357411926565
2007-10-01	27.7225005843359
2008-01-01	27.4087701848706
2008-04-01	27.9288090109890
2008-07-01	27.4930767556204
2008-10-01	27.2410905786953
2009-01-01	27.8657157010320
2009-04-01	27.6501468872835
2009-07-01	26.7277093304801
2009-10-01	27.4262892806015
2010-01-01	27.4002816064959
2010-04-01	27.2275919231407
2010-07-01	27.4994877510594
2010-10-01	27.6927655997770
2011-01-01	27.8804294471999
2011-04-01	27.3501960673114
2011-07-01	26.9332167502151
2011-10-01	27.1662173682995
2012-01-01	26.9352332776980
2012-04-01	27.3463480925004
2012-07-01	27.0043716671121
2012-10-01	26.9432850350484
2013-01-01	26.4177028826532
2013-04-01	25.8353349211142
2013-07-01	25.8777205868826
2013-10-01	25.8183234748445
2014-01-01	25.6913277435563
2014-04-01	26.0657349550796
2014-07-01	25.4669025092284
2014-10-01	25.8385308178472
2015-01-01	25.8730808519038
2015-04-01	25.3682013808794
2015-07-01	25.6305812608333
2015-10-01	25.0696164462042
2016-01-01	25.3627596632588
2016-04-01	25.1724455028041
2016-07-01	25.0696179435378
2016-10-01	25.3923990135749
2017-01-01	24.8980409513071
2017-04-01	25.4264441995832
2017-07-01	23.2811812156300
2017-10-01	23.3273699148170
2018-01-01	23.5669297053735
2018-04-01	23.1955989174324