Quarter	Percent, Seasonally Adjusted
1999-01-01	15.1351717745591
1999-04-01	15.2756481003692
1999-07-01	15.4520385655164
1999-10-01	15.3215184649861
2000-01-01	14.7717870480890
2000-04-01	14.8472190911438
2000-07-01	14.6777342794686
2000-10-01	14.5373825735723
2001-01-01	14.7376158319800
2001-04-01	14.6373254470052
2001-07-01	14.6672498377445
2001-10-01	14.1783139147156
2002-01-01	13.5672757790658
2002-04-01	13.4967323548227
2002-07-01	13.4664975015062
2002-10-01	12.9808970083307
2003-01-01	12.7861299794865
2003-04-01	12.6919696517250
2003-07-01	12.5490930319518
2003-10-01	12.7910215700217
2004-01-01	14.5812789486084
2004-04-01	14.5924537028084
2004-07-01	14.3378916770523
2004-10-01	14.6483395351156
2005-01-01	14.5780999793777
2005-04-01	14.3123104336920
2005-07-01	14.0492622271576
2005-10-01	14.1659979003944
2006-01-01	13.9939987614120
2006-04-01	13.7790792157366
2006-07-01	13.8132959444032
2006-10-01	13.8680586067703
2007-01-01	13.6032462865089
2007-04-01	13.5910171730694
2007-07-01	13.2531471180401
2007-10-01	13.4172326923570
2008-01-01	13.5681722738667
2008-04-01	13.3754532001497
2008-07-01	13.6130582042644
2008-10-01	13.4118277704115
2009-01-01	13.1917782594330
2009-04-01	13.0121652887779
2009-07-01	12.8883387984504
2009-10-01	12.9912936351984
2010-01-01	13.1213399274312
2010-04-01	12.9494637125114
2010-07-01	12.8666866909411
2010-10-01	12.5207912212611
2011-01-01	12.6182540747276
2011-04-01	12.5793817951696
2011-07-01	12.4571528384577
2011-10-01	11.9540628065070
2012-01-01	11.9457193897977
2012-04-01	11.7807213146823
2012-07-01	11.8148922217049
2012-10-01	11.8764080037081
2013-01-01	11.5498543221614
2013-04-01	11.7243356159788
2013-07-01	11.5255214989971
2013-10-01	11.9297548713228
2014-01-01	11.9067058723587
2014-04-01	11.8814457725253
2014-07-01	12.0504862731934
2014-10-01	12.1711823225916
2015-01-01	12.0934598815426
2015-04-01	12.0974027804115
2015-07-01	12.0590472253446
2015-10-01	11.6939305357563
2016-01-01	11.7818460381094
2016-04-01	11.6092676753316
2016-07-01	11.4595038728922
2016-10-01	11.6831873676387
2017-01-01	11.4669134855395
2017-04-01	11.2981486956043
2017-07-01	11.4219864618933
2017-10-01	11.1616710530049
2018-01-01	11.3060729463147
2018-04-01	11.4291777230480