Quarter	Percent, Seasonally Adjusted
1999-01-01	16.46470724132010
1999-04-01	15.93041247108020
1999-07-01	15.59770729088970
1999-10-01	15.18348672681970
2000-01-01	14.52935682583700
2000-04-01	14.12593176265630
2000-07-01	13.85174121522300
2000-10-01	13.45401291367520
2001-01-01	10.56516909421740
2001-04-01	10.60285960128850
2001-07-01	10.56098598495100
2001-10-01	10.68418195813480
2002-01-01	11.22371636737900
2002-04-01	11.42808661853250
2002-07-01	11.74197089803910
2002-10-01	11.61880277686430
2003-01-01	11.70747918203450
2003-04-01	11.54127782607020
2003-07-01	11.52398684365920
2003-10-01	11.38186960442190
2004-01-01	11.24495395119490
2004-04-01	11.23651698100360
2004-07-01	10.98876330687430
2004-10-01	10.59595345062760
2005-01-01	9.83613206431591
2005-04-01	9.38963372683760
2005-07-01	8.77185001287877
2005-10-01	8.78585030466685
2006-01-01	8.66075364978127
2006-04-01	8.55801050830619
2006-07-01	8.46305923598907
2006-10-01	8.31747831511606
2007-01-01	8.07243425258535
2007-04-01	8.00736488225300
2007-07-01	8.34495652564190
2007-10-01	8.67305293851331
2008-01-01	9.28559880367020
2008-04-01	10.38539459102780
2008-07-01	11.60640853903020
2008-10-01	13.93502245842910
2009-01-01	16.77984430027770
2009-04-01	17.78922715738330
2009-07-01	18.32896256791460
2009-10-01	18.93378530534320
2010-01-01	19.38288054913800
2010-04-01	20.01577153467150
2010-07-01	20.18358431828470
2010-10-01	20.31670070831410
2011-01-01	20.63521009677450
2011-04-01	20.86701618063480
2011-07-01	21.83991398537600
2011-10-01	22.72943684691480
2012-01-01	23.71627566514780
2012-04-01	24.56614072240850
2012-07-01	25.40377570266900
2012-10-01	26.04467651271100
2013-01-01	26.45102281371750
2013-04-01	26.24789710829520
2013-07-01	26.26446678311900
2013-10-01	25.91123728427800
2014-01-01	25.40118599657220
2014-04-01	24.73251911379380
2014-07-01	24.32302854327920
2014-10-01	23.78589409403070
2015-01-01	23.19181205595070
2015-04-01	22.60130724707630
2015-07-01	21.81118046134260
2015-10-01	21.10956923323430
2016-01-01	20.53172251418600
2016-04-01	20.19998461952340
2016-07-01	19.47984499210570
2016-10-01	18.76835998550130
2017-01-01	18.20640597039100
2017-04-01	17.50082348215750
2017-07-01	17.00407817756560
2017-10-01	16.61069842976760
2018-01-01	16.14821495863740
2018-04-01	15.56805290932100
2018-07-01	15.16774582524360