Quarter	Percent, Seasonally Adjusted
1998-01-01	38.3509037630165
1998-04-01	38.7245574706600
1998-07-01	38.9357372544200
1998-10-01	39.2598032719081
1999-01-01	38.7877471401023
1999-04-01	38.4771539542949
1999-07-01	38.2569507867929
1999-10-01	37.8413432229469
2000-01-01	38.3013355896401
2000-04-01	38.4721771212136
2000-07-01	38.4866359693504
2000-10-01	38.2660606883886
2001-01-01	37.2400281885239
2001-04-01	36.6219725022826
2001-07-01	36.4632196883652
2001-10-01	36.1244081474114
2002-01-01	35.7434039243763
2002-04-01	35.5754207091181
2002-07-01	35.6200948897526
2002-10-01	34.9755056494476
2003-01-01	35.0382456674708
2003-04-01	34.8042754406140
2003-07-01	34.9278136987075
2003-10-01	33.5084018345627
2004-01-01	36.7644152814522
2004-04-01	36.9004863516548
2004-07-01	36.0309668785610
2004-10-01	35.1696433334540
2005-01-01	34.7117078015282
2005-04-01	34.0215820009847
2005-07-01	33.3382860364816
2005-10-01	33.3070442983453
2006-01-01	33.7078433535739
2006-04-01	32.4100373406157
2006-07-01	31.6340700879954
2006-10-01	31.6332106384960
2007-01-01	30.4106160283949
2007-04-01	30.8088303612608
2007-07-01	31.3133190637931
2007-10-01	30.7583387957204
2008-01-01	30.8384518488097
2008-04-01	31.5962954902880
2008-07-01	30.8224993950390
2008-10-01	29.7255101135114
2009-01-01	29.3969628297471
2009-04-01	28.5770543534171
2009-07-01	28.9311974132167
2009-10-01	28.4769217810729
2010-01-01	28.7457871505708
2010-04-01	28.4972786380088
2010-07-01	27.1850688219741
2010-10-01	27.9090733492269
2011-01-01	27.4651536462523
2011-04-01	26.4180360312709
2011-07-01	26.7211237478658
2011-10-01	27.8368956790476
2012-01-01	28.7506002128340
2012-04-01	28.8251252299490
2012-07-01	28.5162919696328
2012-10-01	28.1318237364586
2013-01-01	27.6094590459150
2013-04-01	27.0998399695522
2013-07-01	26.8809103143126
2013-10-01	26.9718797753742
2014-01-01	27.2518966724580
2014-04-01	27.1981459197216
2014-07-01	27.4041637718123
2014-10-01	26.7152888813838
2015-01-01	26.2864251868028
2015-04-01	26.0313877176071
2015-07-01	26.0561781294259
2015-10-01	26.3704700254536
2016-01-01	26.1208273492137
2016-04-01	26.9320062398573
2016-07-01	26.5344907081206
2016-10-01	26.8407557921047
2017-01-01	26.2168748887097
2017-04-01	25.9350914538423
2017-07-01	26.5168633684746
2017-10-01	26.0395668560579
2018-01-01	26.2671456267535
2018-04-01	26.3074094484503