Quarter	Percent, Seasonally Adjusted
1999-01-01	13.39276363802870
1999-04-01	13.05799175149860
1999-07-01	12.68628983331060
1999-10-01	12.45389862919460
2000-01-01	11.38127931776720
2000-04-01	10.60173117224280
2000-07-01	10.09688111845130
2000-10-01	9.38508351496482
2001-01-01	8.80107032335825
2001-04-01	8.50041772211679
2001-07-01	8.77086106882998
2001-10-01	8.31638520048088
2002-01-01	7.41743387152528
2002-04-01	7.67827474415625
2002-07-01	7.31531095618725
2002-10-01	7.98208914200260
2003-01-01	8.17325832565196
2003-04-01	8.04434859566166
2003-07-01	8.36956032535273
2003-10-01	7.42580305877725
2004-01-01	8.22385528969174
2004-04-01	6.95286375257207
2004-07-01	7.04625628881456
2004-10-01	7.94287856788383
2005-01-01	7.14005466427390
2005-04-01	7.06528176725994
2005-07-01	7.31494450688589
2005-10-01	6.55754857661206
2006-01-01	7.01562970343040
2006-04-01	7.12623642651470
2006-07-01	6.71544753089852
2006-10-01	6.42036648613465
2007-01-01	5.98240739418615
2007-04-01	6.08898060448751
2007-07-01	5.70052790061830
2007-10-01	5.28110683049445
2008-01-01	6.45443190575084
2008-04-01	5.46288304821308
2008-07-01	5.97012326999403
2008-10-01	6.38491445589357
2009-01-01	8.10069435255396
2009-04-01	8.11997822233098
2009-07-01	7.73233806787731
2009-10-01	7.51558425467208
2010-01-01	7.53595453291315
2010-04-01	7.09838534038888
2010-07-01	6.68925507649087
2010-10-01	6.47390926384998
2011-01-01	6.19146951567367
2011-04-01	6.14543763849280
2011-07-01	6.02600348606134
2011-10-01	5.79458135892744
2012-01-01	5.41297602200191
2012-04-01	5.16625428739113
2012-07-01	4.97904471073601
2012-10-01	4.79796586912136
2013-01-01	5.10592438476000
2013-04-01	5.15780466617554
2013-07-01	5.01075239731489
2013-10-01	5.32786771052220
2014-01-01	4.73018159026569
2014-04-01	4.75406280269417
2014-07-01	4.80598845721139
2014-10-01	4.95790622096132
2015-01-01	5.04282933724187
2015-04-01	5.45700734655086
2015-07-01	5.31820872404848
2015-10-01	5.36623559728134
2016-01-01	5.23388135043799
2016-04-01	5.55005843943966
2016-07-01	5.25075081925127
2016-10-01	5.21895462557321
2017-01-01	5.10831630944034
2017-04-01	5.16860624044108
2017-07-01	5.11864558520141
2017-10-01	4.82074252324025
2018-01-01	4.64039247754546
2018-04-01	4.82010568100416
2018-07-01	4.72544875293354