Quarter	Percent, Seasonally Adjusted
1999-01-01	23.6831925250624
1999-04-01	23.1100950231419
1999-07-01	22.9378270009875
1999-10-01	22.3427664929524
2000-01-01	21.2237358592534
2000-04-01	20.5967760368276
2000-07-01	20.3811872646770
2000-10-01	19.6949051763406
2001-01-01	15.1701825492873
2001-04-01	15.2747684161041
2001-07-01	15.1341794605813
2001-10-01	15.2880861549068
2002-01-01	15.8902898277696
2002-04-01	16.2399747586747
2002-07-01	16.4084817542692
2002-10-01	16.0432700508151
2003-01-01	16.2752822271721
2003-04-01	15.8616290360301
2003-07-01	15.7957106081433
2003-10-01	15.4217767746716
2004-01-01	15.0830353409418
2004-04-01	15.1980945429910
2004-07-01	14.6768499834212
2004-10-01	14.3240122693150
2005-01-01	12.9620115613220
2005-04-01	12.1441138645765
2005-07-01	11.4164711560430
2005-10-01	11.4465534520271
2006-01-01	11.4935051944434
2006-04-01	11.4020783471597
2006-07-01	11.3194231208826
2006-10-01	11.1668326939679
2007-01-01	10.6609869393267
2007-04-01	10.4500755751494
2007-07-01	10.8312648902853
2007-10-01	10.8417093451842
2008-01-01	11.2610126459651
2008-04-01	12.1542214093714
2008-07-01	12.9523297679488
2008-10-01	14.9128821968611
2009-01-01	17.1300575454929
2009-04-01	18.0981436106753
2009-07-01	18.3676028847788
2009-10-01	18.9041000578531
2010-01-01	19.3002865959640
2010-04-01	20.3880758319660
2010-07-01	20.6092264086940
2010-10-01	20.5915776156594
2011-01-01	21.0618954293312
2011-04-01	21.0369775713603
2011-07-01	22.1628401601588
2011-10-01	22.9791393324698
2012-01-01	23.8566194048219
2012-04-01	24.4937137002517
2012-07-01	25.5052340087830
2012-10-01	26.2746533304851
2013-01-01	26.6608650845833
2013-04-01	26.8416265776620
2013-07-01	26.6022524199111
2013-10-01	26.5821369680347
2014-01-01	25.9653645106756
2014-04-01	25.4842769867467
2014-07-01	25.4474770586911
2014-10-01	24.8054377529587
2015-01-01	24.3679502771545
2015-04-01	24.0853939884887
2015-07-01	23.1443508723049
2015-10-01	22.5953013195544
2016-01-01	22.1557855829291
2016-04-01	21.8948257841127
2016-07-01	21.1335918500491
2016-10-01	20.3306748594208
2017-01-01	19.8695350666086
2017-04-01	19.1325805381782
2017-07-01	18.6986917089390
2017-10-01	18.4105889036965
2018-01-01	17.8876095237595
2018-04-01	17.1778348815860
2018-07-01	16.7196548592362