Quarter	Percent, Seasonally Adjusted
1998-01-01	16.0626940947096
1998-04-01	16.0916199249988
1998-07-01	16.3650272423846
1998-10-01	15.8719261066396
1999-01-01	15.9124870300434
1999-04-01	15.8203355097945
1999-07-01	15.8329000034531
1999-10-01	15.8615888225707
2000-01-01	15.4517756696266
2000-04-01	15.3968035344325
2000-07-01	14.9355782865692
2000-10-01	14.9417765250710
2001-01-01	14.4015229433299
2001-04-01	14.8708756718366
2001-07-01	14.9156698824117
2001-10-01	14.7659919810109
2002-01-01	14.9549679009688
2002-04-01	14.6285111361731
2002-07-01	14.4593478897682
2002-10-01	14.6791454041783
2003-01-01	14.2573287644989
2003-04-01	14.0068132078424
2003-07-01	14.1018916611974
2003-10-01	13.9951200081729
2004-01-01	13.9413115902618
2004-04-01	13.6860615146235
2004-07-01	13.7269069118899
2004-10-01	13.3816421792455
2005-01-01	13.2382659175072
2005-04-01	13.2193781020189
2005-07-01	12.9542457197917
2005-10-01	12.5912077016442
2006-01-01	12.4254705872510
2006-04-01	12.2720031531425
2006-07-01	12.4105750864568
2006-10-01	12.2000994058747
2007-01-01	12.3100674530613
2007-04-01	12.3754915413443
2007-07-01	12.1784193926818
2007-10-01	12.2743211280890
2008-01-01	12.1167458730937
2008-04-01	11.8179135086527
2008-07-01	12.1416052411097
2008-10-01	12.1199378207865
2009-01-01	12.1009005782324
2009-04-01	11.9983309186355
2009-07-01	12.6391580492864
2009-10-01	12.1195732407287
2010-01-01	11.3090866917164
2010-04-01	11.3545158848667
2010-07-01	11.2436819191523
2010-10-01	11.4086047426645
2011-01-01	11.5173093602669
2011-04-01	11.0455943929839
2011-07-01	12.0060838108284
2011-10-01	11.9994421241861
2012-01-01	11.6024582451755
2012-04-01	11.1990950160928
2012-07-01	11.4844079114946
2012-10-01	11.7710963239937
2013-01-01	11.7909331984026
2013-04-01	11.8330050210036
2013-07-01	12.0188183933152
2013-10-01	11.3062731815791
2014-01-01	11.6768056805084
2014-04-01	10.9965985248547
2014-07-01	11.5439969735508
2014-10-01	11.2824720220573
2015-01-01	11.3799702716876
2015-04-01	11.0665803477277
2015-07-01	11.4390695932925
2015-10-01	10.9770240316182
2016-01-01	10.8597309580597
2016-04-01	11.2407946422083
2016-07-01	10.5467060135808
2016-10-01	10.8249526125101
2017-01-01	10.7709982244916
2017-04-01	10.4039865123623
2017-07-01	10.2658644877118
2017-10-01	10.1748372410736
2018-01-01	10.1042396184648
2018-04-01	10.0077593694310