Quarter	Percent, Seasonally Adjusted
1999-04-01	16.2959513135959
1999-07-01	16.0511961636552
1999-10-01	15.9052813526500
2000-01-01	16.1878511350166
2000-04-01	16.0830129986747
2000-07-01	16.0128252720889
2000-10-01	16.1945399363110
2001-01-01	16.2136372938178
2001-04-01	16.3441422711430
2001-07-01	16.4772536962785
2001-10-01	16.4243436917708
2002-01-01	16.5711459182153
2002-04-01	16.2167850270416
2002-07-01	16.0691332724848
2002-10-01	15.9499394181910
2003-01-01	16.3114641975172
2003-04-01	16.1577694785551
2003-07-01	16.2184243990805
2003-10-01	16.2419036690216
2004-01-01	16.1702883752233
2004-04-01	16.2793953921548
2004-07-01	16.3850251124521
2004-10-01	16.1374505653495
2005-01-01	15.9760260371586
2005-04-01	15.9874393072015
2005-07-01	15.8424589920708
2005-10-01	15.7280695060691
2006-01-01	15.3629459533451
2006-04-01	15.3703239819041
2006-07-01	15.5665920076908
2006-10-01	15.5505311728872
2007-01-01	15.6517874742255
2007-04-01	15.5128420002153
2007-07-01	15.4490797513421
2007-10-01	15.4596177846295
2008-01-01	15.2224706561474
2008-04-01	15.1500439628416
2008-07-01	15.2132453432848
2008-10-01	15.0574604626125
2009-01-01	14.7942766238409
2009-04-01	15.1037995072892
2009-07-01	14.9869752183824
2009-10-01	14.9316433285349
2010-01-01	15.3138877822338
2010-04-01	15.1127284441832
2010-07-01	14.9491512440682
2010-10-01	14.9341516011964
2011-01-01	14.7376428512267
2011-04-01	14.7845749028918
2011-07-01	14.7507347628085
2011-10-01	14.6084754142242
2012-01-01	14.6492687222762
2012-04-01	14.6225822837005
2012-07-01	14.3268569810157
2012-10-01	14.2410537570177
2013-01-01	14.3191104777509
2013-04-01	14.2786329991685
2013-07-01	14.3243841054173
2013-10-01	14.3243639223122
2014-01-01	14.0117215885836
2014-04-01	13.9140019046981
2014-07-01	13.9328789198796
2014-10-01	14.1484942529051
2015-01-01	14.1184968258000
2015-04-01	14.2386159445134
2015-07-01	14.2883576153068
2015-10-01	14.0950759895456
2016-01-01	14.1036354911126
2016-04-01	13.9180458175945
2016-07-01	13.8369815473067
2016-10-01	13.8351263817796
2017-01-01	13.7646863526521
2017-04-01	13.3765575666264
2017-07-01	13.4213916388035
2017-10-01	13.2700456074393
2018-01-01	13.1054176305219
2018-04-01	13.2186713189351