Quarter	Percent, Seasonally Adjusted
1998-01-01	16.25165833172480
1998-04-01	16.32201081943860
1998-07-01	16.25091607862200
1998-10-01	16.41136614310750
1999-01-01	16.03457474756950
1999-04-01	16.07162110131780
1999-07-01	15.62861049876420
1999-10-01	15.08979078177730
2000-01-01	15.08225068273910
2000-04-01	14.70807023244450
2000-07-01	14.47339364561440
2000-10-01	13.72273532509950
2001-01-01	13.45007281876130
2001-04-01	12.93729796579600
2001-07-01	12.90764712434020
2001-10-01	12.52622220399000
2002-01-01	12.22769398955290
2002-04-01	12.56310399521330
2002-07-01	12.14848289665310
2002-10-01	11.88083729155020
2003-01-01	11.59383886767930
2003-04-01	11.98219550347810
2003-07-01	11.71622297005380
2003-10-01	11.13971286949630
2004-01-01	11.08496907616180
2004-04-01	10.37870433846630
2004-07-01	10.26754915215160
2004-10-01	10.18016969447930
2005-01-01	10.07337647412520
2005-04-01	9.90235463605798
2005-07-01	9.99358844992116
2005-10-01	10.20421043202520
2006-01-01	9.47536196228359
2006-04-01	8.74411423290387
2006-07-01	8.46228694221279
2006-10-01	8.40988574897172
2007-01-01	7.60614587162571
2007-04-01	7.59788889223758
2007-07-01	7.95802990821235
2007-10-01	8.18803928874696
2008-01-01	8.48340335293011
2008-04-01	8.84208479277124
2008-07-01	8.48267617986652
2008-10-01	8.17181085942843
2009-01-01	8.92730369419746
2009-04-01	9.00807408010235
2009-07-01	9.24146121172666
2009-10-01	9.71269683310726
2010-01-01	9.83394988108571
2010-04-01	9.66655470575141
2010-07-01	9.39672390569223
2010-10-01	9.49509574776341
2011-01-01	8.97794993100210
2011-04-01	9.14195144461715
2011-07-01	9.73076127585301
2011-10-01	10.31118731792480
2012-01-01	11.33613469281540
2012-04-01	11.69169786766490
2012-07-01	11.97740999044950
2012-10-01	12.29224298031660
2013-01-01	13.00126365981800
2013-04-01	13.01136981558330
2013-07-01	13.06164658599200
2013-10-01	13.19310481354950
2014-01-01	13.60536442365720
2014-04-01	13.54967505353790
2014-07-01	13.88917038585100
2014-10-01	14.14219684509090
2015-01-01	13.07656401369960
2015-04-01	13.04351144361240
2015-07-01	12.31250069862190
2015-10-01	12.33886091815530
2016-01-01	12.29341431577000
2016-04-01	12.98584802827010
2016-07-01	12.86930131779440
2016-10-01	12.94020394486860
2017-01-01	12.65698393115820
2017-04-01	12.31051796279850
2017-07-01	12.63630745696690
2017-10-01	11.93988172850850
2018-01-01	12.20962534645340
2018-04-01	12.00919225603070