Quarter	Percent, Seasonally Adjusted
1999-01-01	39.8734100687039
1999-04-01	39.7296981875305
1999-07-01	39.2893164177479
1999-10-01	39.9390505629338
2000-01-01	39.1494107687186
2000-04-01	39.5891483741229
2000-07-01	40.6384204816806
2000-10-01	40.2548240600338
2001-01-01	39.6457832935912
2001-04-01	40.1571576093279
2001-07-01	39.2270011068646
2001-10-01	38.8573144031882
2002-01-01	39.7918140378476
2002-04-01	39.5979330042546
2002-07-01	40.3097331174644
2002-10-01	39.8702471467165
2003-01-01	40.8070715760290
2003-04-01	40.1206054736532
2003-07-01	39.8764676027097
2003-10-01	39.9265919086019
2004-01-01	39.7199576054883
2004-04-01	39.4764116430088
2004-07-01	38.7583882465670
2004-10-01	39.4389036629411
2005-01-01	39.5458460399099
2005-04-01	40.2082903883778
2005-07-01	39.7481665738436
2005-10-01	38.9321871215216
2006-01-01	39.0097487175457
2006-04-01	39.1548383671548
2006-07-01	38.9714043061964
2006-10-01	39.1375548063874
2007-01-01	38.8530935752743
2007-04-01	39.2703215303271
2007-07-01	39.6027459987611
2007-10-01	39.6223965142928
2008-01-01	39.3797068126730
2008-04-01	39.0286677935943
2008-07-01	39.1092669299091
2008-10-01	38.6831767194708
2009-01-01	38.9641169263068
2009-04-01	38.9386065479727
2009-07-01	39.3502742644761
2009-10-01	40.2301270255221
2010-01-01	40.1294003421043
2010-04-01	39.9135724196663
2010-07-01	40.0730946849923
2010-10-01	40.6697296860998
2011-01-01	40.3871527742668
2011-04-01	40.1941016877204
2011-07-01	40.2383531743817
2011-10-01	40.7025057579012
2012-01-01	40.6009070959773
2012-04-01	40.4780328006180
2012-07-01	41.1749397711450
2012-10-01	41.5390044762869
2013-01-01	41.5685071218449
2013-04-01	41.1261491992606
2013-07-01	41.2508419283406
2013-10-01	41.7041276617428
2014-01-01	42.3492228964025
2014-04-01	42.3001075520433
2014-07-01	41.8464427798631
2014-10-01	41.2977829783500
2015-01-01	41.7624326271942
2015-04-01	42.4680705499001
2015-07-01	42.5455389150122
2015-10-01	41.9914878343042
2016-01-01	40.3259601854300
2016-04-01	40.1718414990900
2016-07-01	40.8808258356116
2016-10-01	40.8860653683079
2017-01-01	41.6796833819989
2017-04-01	42.0112081417135
2017-07-01	41.5070611193229
2017-10-01	41.8347915349902
2018-01-01	41.4683576796184
2018-04-01	41.3180314212543