Quarter	Percent, Seasonally Adjusted
1999-01-01	11.82985045409750
1999-04-01	11.02001511833650
1999-07-01	10.65670299596740
1999-10-01	10.46720197606580
2000-01-01	10.00311164344220
2000-04-01	9.70640498352990
2000-07-01	9.45266056993125
2000-10-01	9.25870010749359
2001-01-01	7.54841271825844
2001-04-01	7.55286595880369
2001-07-01	7.50034299537461
2001-10-01	7.56549364955539
2002-01-01	8.02123069487543
2002-04-01	8.03878171946781
2002-07-01	8.53222560708483
2002-10-01	8.59693438431668
2003-01-01	8.43824448123688
2003-04-01	8.41526563318851
2003-07-01	8.59310591142069
2003-10-01	8.54634586918811
2004-01-01	8.37460790058174
2004-04-01	8.42056461956402
2004-07-01	8.42714532754541
2004-10-01	7.81923066701148
2005-01-01	7.53648204033174
2005-04-01	7.46322459899822
2005-07-01	6.81021995758230
2005-10-01	6.72525506612305
2006-01-01	6.54009861804703
2006-04-01	6.41151106301126
2006-07-01	6.32524157612158
2006-10-01	6.12354336955696
2007-01-01	6.00996873905564
2007-04-01	6.17137425928385
2007-07-01	6.55952729821950
2007-10-01	6.88900379802763
2008-01-01	7.53040997111328
2008-04-01	9.06832427061582
2008-07-01	10.65379442007570
2008-10-01	12.95670094632010
2009-01-01	16.39467569047290
2009-04-01	17.56796596862790
2009-07-01	18.05696364334920
2009-10-01	18.57756030347360
2010-01-01	19.29201987271770
2010-04-01	19.58062969781750
2010-07-01	19.56870742990340
2010-10-01	19.82661385331690
2011-01-01	20.04677675836940
2011-04-01	20.46728429934090
2011-07-01	21.36885787664830
2011-10-01	22.29520964535270
2012-01-01	23.36005620516110
2012-04-01	24.51205794620870
2012-07-01	25.02503828986230
2012-10-01	25.43303466212680
2013-01-01	26.02780963982830
2013-04-01	25.61244738696030
2013-07-01	25.69613581007390
2013-10-01	25.06006387023130
2014-01-01	24.71077171171900
2014-04-01	23.83616372338750
2014-07-01	23.04078569326960
2014-10-01	22.80937525919760
2015-01-01	22.07379870891010
2015-04-01	21.10724416387680
2015-07-01	20.41117252356280
2015-10-01	19.49346041148290
2016-01-01	18.79061365529790
2016-04-01	18.56988616014950
2016-07-01	17.89858180767880
2016-10-01	17.21132719965650
2017-01-01	16.55092450132230
2017-04-01	15.82022012003760
2017-07-01	15.30620446866390
2017-10-01	14.95191205577050
2018-01-01	14.49901572669410
2018-04-01	13.91156839598640
2018-07-01	13.61440118192710