Quarter	Percent, Seasonally Adjusted
1999-01-01	14.36281731426620
1999-04-01	14.08764918327450
1999-07-01	14.38076974655960
1999-10-01	12.65782950257210
2000-01-01	13.47802066881280
2000-04-01	14.21851632471770
2000-07-01	13.45152993465640
2000-10-01	13.44906220399550
2001-01-01	12.37406646631720
2001-04-01	12.07643021207980
2001-07-01	11.71307073457170
2001-10-01	12.96293163515460
2002-01-01	12.53822266589730
2002-04-01	12.86440906356220
2002-07-01	13.83338688146380
2002-10-01	13.80938465946200
2003-01-01	14.76102584814090
2003-04-01	14.06062013730510
2003-07-01	13.10481231620280
2003-10-01	13.00060870387310
2004-01-01	14.68334643185410
2004-04-01	15.18164119315850
2004-07-01	17.16733554543560
2004-10-01	18.07607443510760
2005-01-01	19.10885805883860
2005-04-01	20.98232392939580
2005-07-01	19.16248376386100
2005-10-01	19.28894006989740
2006-01-01	18.38476248258810
2006-04-01	17.18274138321580
2006-07-01	19.67252870291390
2006-10-01	19.30680517401540
2007-01-01	17.73909837885130
2007-04-01	16.18185731203910
2007-07-01	16.62573242149010
2007-10-01	19.14079017629430
2008-01-01	18.49503308798820
2008-04-01	17.92781802885380
2008-07-01	19.15100095832060
2008-10-01	19.93953881208620
2009-01-01	24.39825569530850
2009-04-01	27.22063864620530
2009-07-01	29.34378190862460
2009-10-01	30.42109198447120
2010-01-01	28.75171739097080
2010-04-01	29.34950421947560
2010-07-01	26.88090199294450
2010-10-01	25.99324908539900
2011-01-01	27.59136714881700
2011-04-01	25.58342221233310
2011-07-01	27.37710678432140
2011-10-01	27.36616501203240
2012-01-01	28.46501797120810
2012-04-01	30.64857616717740
2012-07-01	29.74549481726650
2012-10-01	27.58708366476330
2013-01-01	28.34238348629190
2013-04-01	24.94068932699340
2013-07-01	25.89522564006500
2013-10-01	23.30779616451630
2014-01-01	18.73375458893780
2014-04-01	20.33666160677450
2014-07-01	20.70760052805440
2014-10-01	20.15808321557800
2015-01-01	19.83869079909020
2015-04-01	19.38476525374310
2015-07-01	17.49953700036830
2015-10-01	16.50421840034780
2016-01-01	14.70586967657280
2016-04-01	13.14657491492850
2016-07-01	12.26072687691950
2016-10-01	11.65292754736230
2017-01-01	10.59725637804780
2017-04-01	10.89649080629540
2017-07-01	8.52514337904107
2017-10-01	8.81262283078589
2018-01-01	9.01282765973458
2018-04-01	8.50716034674248