Quarter	Percent, Seasonally Adjusted
1999-04-01	49.7346263684597
1999-07-01	49.2793748099646
1999-10-01	49.0152073607204
2000-01-01	48.8339757504259
2000-04-01	48.4045383994372
2000-07-01	48.2981919235420
2000-10-01	48.1507475268902
2001-01-01	48.0026732067347
2001-04-01	47.9958596136275
2001-07-01	47.3542415577942
2001-10-01	47.2952726798780
2002-01-01	46.8840221172980
2002-04-01	46.8422316661252
2002-07-01	47.0098644997123
2002-10-01	46.9061723006729
2003-01-01	46.7149448124585
2003-04-01	46.4977472186872
2003-07-01	46.2340386861837
2003-10-01	46.1971690076207
2004-01-01	46.1657512542722
2004-04-01	46.1757670136519
2004-07-01	45.8205393739343
2004-10-01	45.0133900351669
2005-01-01	44.6536613945658
2005-04-01	44.1931861224022
2005-07-01	43.8481323381778
2005-10-01	43.5584927859621
2006-01-01	43.2262067335167
2006-04-01	43.0920114858619
2006-07-01	42.5350200921332
2006-10-01	42.4580960908629
2007-01-01	38.9499830477226
2007-04-01	38.4555222376907
2007-07-01	38.6542572100749
2007-10-01	38.6296660010448
2008-01-01	38.6132649035204
2008-04-01	38.8689955313647
2008-07-01	38.7650764750587
2008-10-01	39.2158777028508
2009-01-01	39.3336127928906
2009-04-01	39.3961591079287
2009-07-01	39.6125822361383
2009-10-01	40.0732133529401
2010-01-01	40.4053762399160
2010-04-01	40.2724702780168
2010-07-01	40.7052554194371
2010-10-01	40.4460769800293
2011-01-01	40.7347238843588
2011-04-01	40.6022700526581
2011-07-01	40.8145512624423
2011-10-01	40.5599280219279
2012-01-01	40.4580764562420
2012-04-01	40.9682183660274
2012-07-01	41.0018649079601
2012-10-01	40.8938335472313
2013-01-01	40.4294343128211
2013-04-01	39.9265997049217
2013-07-01	40.2384012113973
2013-10-01	40.2530151115910
2014-01-01	40.3134886176814
2014-04-01	40.8375435059857
2014-07-01	40.3591830917515
2014-10-01	40.6045467728830
2015-01-01	40.7331542173794
2015-04-01	40.6082156020417
2015-07-01	40.6270906338716
2015-10-01	40.3364548036240
2016-01-01	40.1898032357455
2016-04-01	39.4520155926357
2016-07-01	39.5872530054568
2016-10-01	39.7202041272762
2017-01-01	39.3956133659301
2017-04-01	39.9969640271139
2017-07-01	39.7201287046926
2017-10-01	39.3392330983251
2018-01-01	39.4574641772695
2018-04-01	39.0181735347338