Quarter	Percent, Seasonally Adjusted
1999-01-01	20.4009384994325
1999-04-01	23.8817996177787
1999-07-01	17.7286051295209
1999-10-01	13.0739703561205
2000-01-01	16.4044319565786
2000-04-01	14.2983903973791
2000-07-01	17.1683000858719
2000-10-01	13.1290499629973
2001-01-01	14.9529245859957
2001-04-01	15.7766418577301
2001-07-01	15.7833320909741
2001-10-01	18.4815049905763
2002-01-01	16.8321632355620
2002-04-01	17.4230274153842
2002-07-01	16.9719499394641
2002-10-01	17.7343629777410
2003-01-01	21.6011537642426
2003-04-01	21.3055503779035
2003-07-01	21.9006481174800
2003-10-01	23.9126614116106
2004-01-01	20.2405408087679
2004-04-01	17.2270055427279
2004-07-01	22.3186129580638
2004-10-01	20.7101015112685
2005-01-01	19.7997152215055
2005-04-01	21.9236328236146
2005-07-01	20.0837097251797
2005-10-01	22.2561983898680
2006-01-01	20.4686395931748
2006-04-01	19.7921667299500
2006-07-01	16.3581859558566
2006-10-01	18.3083106406779
2007-01-01	17.3839894243953
2007-04-01	17.6961913701283
2007-07-01	17.3150046266018
2007-10-01	15.9907347577278
2008-01-01	16.8397941793837
2008-04-01	16.3540205972826
2008-07-01	20.4016142535186
2008-10-01	15.7581034634775
2009-01-01	19.6701663126974
2009-04-01	20.3318204290940
2009-07-01	23.3288579038908
2009-10-01	22.7224802055290
2010-01-01	23.9253141433528
2010-04-01	23.4134235210479
2010-07-01	21.1163950882836
2010-10-01	21.3487758500543
2011-01-01	19.4037287027662
2011-04-01	17.5228077035366
2011-07-01	20.7053251403780
2011-10-01	17.2841353202460
2012-01-01	19.0838538631376
2012-04-01	17.7162235521623
2012-07-01	21.4576944419415
2012-10-01	23.5784561739442
2013-01-01	24.5480589712468
2013-04-01	23.9365257493174
2013-07-01	24.2459505414517
2013-10-01	26.1364808946723
2014-01-01	25.9590984678596
2014-04-01	24.6438974926668
2014-07-01	21.6354687945116
2014-10-01	23.7161362930334
2015-01-01	20.7115388937966
2015-04-01	25.2069946280806
2015-07-01	21.9441476680010
2015-10-01	27.5020950889598
2016-01-01	20.7020148587280
2016-04-01	22.8589278571250
2016-07-01	21.1013719736941
2016-10-01	22.3070418893920
2017-01-01	23.5758159948323
2017-04-01	21.0178984774344
2017-07-01	19.6535562158801
2017-10-01	16.5509343187677
2018-01-01	18.6036673148341
2018-04-01	19.7303687235789