Quarter	Percent, Seasonally Adjusted
1999-01-01	32.4906853411496
1999-04-01	32.3966908629323
1999-07-01	32.3796012601677
1999-10-01	32.4373514856330
2000-01-01	32.3951779150755
2000-04-01	32.2681452495649
2000-07-01	32.0846464048244
2000-10-01	31.8231919683715
2001-01-01	32.2964050952403
2001-04-01	32.7153493888079
2001-07-01	32.9176670243015
2001-10-01	33.1289491475342
2002-01-01	32.9713617540596
2002-04-01	32.9878121830729
2002-07-01	32.9177776730952
2002-10-01	32.7995318809735
2003-01-01	32.6286222472383
2003-04-01	32.2281768015997
2003-07-01	32.2356879113032
2003-10-01	32.4561326348122
2004-01-01	32.4683828078928
2004-04-01	32.8815907579938
2004-07-01	32.9713237948871
2004-10-01	32.7086087870875
2005-01-01	32.4024265305006
2005-04-01	32.3020520169676
2005-07-01	31.9045065817784
2005-10-01	31.7843987052873
2006-01-01	31.4058474113248
2006-04-01	31.0505948288754
2006-07-01	31.1765666864545
2006-10-01	30.7878953968745
2007-01-01	31.0418994722623
2007-04-01	31.2318729997704
2007-07-01	31.4547489643276
2007-10-01	31.7106629473503
2008-01-01	31.9956923448545
2008-04-01	32.0637689928670
2008-07-01	31.8432428359515
2008-10-01	32.2263908276149
2009-01-01	32.1464025735258
2009-04-01	32.0645347972083
2009-07-01	32.5053327324840
2009-10-01	32.3145264109218
2010-01-01	32.2469892737970
2010-04-01	32.1859489145727
2010-07-01	32.2716642885136
2010-10-01	32.1060427983058
2011-01-01	31.8872908240291
2011-04-01	31.7937881866065
2011-07-01	31.4933647920760
2011-10-01	31.3574342248339
2012-01-01	30.9728561489517
2012-04-01	30.6207247680668
2012-07-01	30.3374984791355
2012-10-01	29.7731558556509
2013-01-01	30.0510427904826
2013-04-01	29.1384922730034
2013-07-01	28.5467594321429
2013-10-01	28.2270663994497
2014-01-01	27.0092325750884
2014-04-01	26.8863478108812
2014-07-01	26.3081048099730
2014-10-01	26.0660889122730
2015-01-01	25.4777378831391
2015-04-01	24.9592209332127
2015-07-01	24.4493166982809
2015-10-01	24.0664459825221
2016-01-01	23.5083842907961
2016-04-01	23.1120497874650
2016-07-01	23.0064325183980
2016-10-01	22.5829138404367
2017-01-01	22.3882900658915
2017-04-01	21.8041316775099
2017-07-01	21.5683050964401
2017-10-01	21.3089504359142
2018-01-01	21.0337102033982
2018-04-01	21.1255840779745