Quarter	Percent, Seasonally Adjusted
1999-01-01	23.6862086987291
1999-04-01	23.1178845025637
1999-07-01	22.9459480053923
1999-10-01	22.3534526764708
2000-01-01	21.2292898743274
2000-04-01	20.6062826074594
2000-07-01	20.3919182278609
2000-10-01	19.7033095330735
2001-01-01	15.1766734198147
2001-04-01	15.2784521635564
2001-07-01	15.1402945805612
2001-10-01	15.2943656247032
2002-01-01	15.8931306985927
2002-04-01	16.2433986785181
2002-07-01	16.4117626673240
2002-10-01	16.0466610739717
2003-01-01	16.2777927758081
2003-04-01	15.8658365297891
2003-07-01	15.7999789563621
2003-10-01	15.4253235517604
2004-01-01	15.0846947547959
2004-04-01	15.2015026798547
2004-07-01	14.6793866758377
2004-10-01	14.3279679345487
2005-01-01	12.9670330464461
2005-04-01	12.1502706585960
2005-07-01	11.4236892397864
2005-10-01	11.4539628777241
2006-01-01	11.5022183201916
2006-04-01	11.4098628669443
2006-07-01	11.3254101992413
2006-10-01	11.1724259560417
2007-01-01	10.6646104747434
2007-04-01	10.4531573813320
2007-07-01	10.8350981289795
2007-10-01	10.8466687496849
2008-01-01	11.2675730248242
2008-04-01	12.1606354114054
2008-07-01	12.9588522649055
2008-10-01	14.9225679975496
2009-01-01	17.1400506972923
2009-04-01	18.1104864208701
2009-07-01	18.3774585857992
2009-10-01	18.9170122210331
2010-01-01	19.3111591503831
2010-04-01	20.3992313876924
2010-07-01	20.6197692891691
2010-10-01	20.6043066232855
2011-01-01	21.0777457196246
2011-04-01	21.0474941717491
2011-07-01	22.1789087607255
2011-10-01	22.9935086579907
2012-01-01	23.8759728683925
2012-04-01	24.5107526052429
2012-07-01	25.5246144621811
2012-10-01	26.2890310748081
2013-01-01	26.6709132835930
2013-04-01	26.8537532246337
2013-07-01	26.6126829785386
2013-10-01	26.5885628080355
2014-01-01	25.9750400457408
2014-04-01	25.4952809985234
2014-07-01	25.4583689841704
2014-10-01	24.8128201949460
2015-01-01	24.3769505689194
2015-04-01	24.0897984769198
2015-07-01	23.1456060011554
2015-10-01	22.6005700148543
2016-01-01	22.1652029895289
2016-04-01	21.9037129389486
2016-07-01	21.1386841328302
2016-10-01	20.3372562830418
2017-01-01	19.8782503285683
2017-04-01	19.1391941161460
2017-07-01	18.7039389167844
2017-10-01	18.4172950184083
2018-01-01	17.8990504273907
2018-04-01	17.1852380699580
2018-07-01	16.7266746280735