Quarter	Percent, Seasonally Adjusted
1999-04-01	9.11147570499561
1999-07-01	8.43294759324428
1999-10-01	7.96730061700618
2000-01-01	7.50189212594204
2000-04-01	7.02893466404382
2000-07-01	6.61441688040048
2000-10-01	6.59638628577586
2001-01-01	6.40130397041929
2001-04-01	6.80006191042943
2001-07-01	7.64701059618099
2001-10-01	7.70566063518081
2002-01-01	8.43102447675648
2002-04-01	8.47263144590064
2002-07-01	8.20243480010831
2002-10-01	8.77470310727752
2003-01-01	9.25927351483181
2003-04-01	8.84198723492330
2003-07-01	9.43097025582614
2003-10-01	9.11628484600583
2004-01-01	8.78641722405068
2004-04-01	8.87595102931889
2004-07-01	9.11679568449267
2004-10-01	8.98083697108181
2005-01-01	8.30247367121430
2005-04-01	8.60699057010363
2005-07-01	8.48998183973204
2005-10-01	8.84594460041060
2006-01-01	8.54302576460475
2006-04-01	8.47443429201929
2006-07-01	9.65509720075128
2006-10-01	7.70282120577004
2007-01-01	8.71006298853814
2007-04-01	10.14036142543870
2007-07-01	8.57372618490293
2007-10-01	9.16177746278867
2008-01-01	10.29589712052440
2008-04-01	12.11019915948250
2008-07-01	14.62392885690960
2008-10-01	17.17183117187760
2009-01-01	20.66482815249270
2009-04-01	24.83699147296610
2009-07-01	25.68816027087460
2009-10-01	27.19546491324230
2010-01-01	27.56018173266180
2010-04-01	27.58615247787380
2010-07-01	27.76324136102600
2010-10-01	29.73189113244630
2011-01-01	29.22726904063140
2011-04-01	28.98319728878500
2011-07-01	29.86105705374900
2011-10-01	30.26747518847730
2012-01-01	31.35804149783500
2012-04-01	31.54680154870340
2012-07-01	30.98810090469590
2012-10-01	29.25997752774570
2013-01-01	27.78537697731910
2013-04-01	27.43759447645670
2013-07-01	26.10774543017440
2013-10-01	25.51648772518890
2014-01-01	25.58470101994240
2014-04-01	24.33659355484010
2014-07-01	22.43694608662150
2014-10-01	21.25076924207710
2015-01-01	22.19621164077170
2015-04-01	19.88185732863860
2015-07-01	19.46540378398380
2015-10-01	19.36535012497080
2016-01-01	17.82602207293190
2016-04-01	16.84594732720330
2016-07-01	16.48459466573530
2016-10-01	16.09453906609910
2017-01-01	14.39923097866290
2017-04-01	14.51179147601350
2017-07-01	14.98366696836610
2017-10-01	13.72838973801000
2018-01-01	13.98593469303930
2018-04-01	13.72480165526920