Quarter	Percent, Seasonally Adjusted
1999-01-01	67.9909028920490
1999-04-01	67.6414750097126
1999-07-01	68.2912795302253
1999-10-01	68.5703452887966
2000-01-01	69.2916060954324
2000-04-01	69.9119500732286
2000-07-01	69.6835464129692
2000-10-01	69.0062789823481
2001-01-01	69.2005877427977
2001-04-01	68.6780453808434
2001-07-01	69.3036032475439
2001-10-01	68.0416232328707
2002-01-01	68.5042588968840
2002-04-01	68.2407542154255
2002-07-01	68.4396287424311
2002-10-01	67.8544109827398
2003-01-01	66.7766577514626
2003-04-01	67.3142408915082
2003-07-01	67.2365167823205
2003-10-01	67.7377457482381
2004-01-01	67.8928232112783
2004-04-01	68.0173884060997
2004-07-01	67.7446865003346
2004-10-01	67.7883287600847
2005-01-01	68.4531495614137
2005-04-01	67.9579923377627
2005-07-01	68.6315198242660
2005-10-01	68.0024632543485
2006-01-01	67.4646603124067
2006-04-01	67.3584371159215
2006-07-01	67.8417648072196
2006-10-01	69.0283432464441
2007-01-01	68.9468374862448
2007-04-01	68.5029107593313
2007-07-01	68.7474210763548
2007-10-01	68.6026245320472
2008-01-01	68.8653648129798
2008-04-01	68.5641001276457
2008-07-01	68.3303811863656
2008-10-01	68.5062083923815
2009-01-01	67.6293269396349
2009-04-01	67.0210836198070
2009-07-01	66.8533021183228
2009-10-01	67.1162345344223
2010-01-01	67.1261366023412
2010-04-01	67.4136237449687
2010-07-01	67.4284943587888
2010-10-01	67.7935741940837
2011-01-01	66.7074755815547
2011-04-01	67.7714491510324
2011-07-01	66.4613381119076
2011-10-01	67.4818329051391
2012-01-01	67.0986304934459
2012-04-01	67.2480932883632
2012-07-01	66.8615010441626
2012-10-01	66.2955741213339
2013-01-01	66.1565621390579
2013-04-01	67.0653998663270
2013-07-01	66.2464112579106
2013-10-01	66.0075317605541
2014-01-01	66.0848368013445
2014-04-01	65.6899201996883
2014-07-01	65.5097426247965
2014-10-01	66.0449199153380
2015-01-01	65.9227350228974
2015-04-01	65.0860940725583
2015-07-01	65.9600695540543
2015-10-01	65.1402580951527
2016-01-01	65.7544516933932
2016-04-01	66.6116744143984
2016-07-01	66.4071090597474
2016-10-01	67.0460783170117
2017-01-01	67.0494938738128
2017-04-01	67.2395841721075
2017-07-01	67.5585735546284
2017-10-01	68.3112361934436
2018-01-01	68.0748834802244
2018-04-01	67.9010267613958