Quarter	Percent, Seasonally Adjusted
2000-01-01	15.7268567955900
2000-04-01	15.6883585651431
2000-07-01	15.9526411228628
2000-10-01	15.9148251929270
2001-01-01	16.0997985741664
2001-04-01	16.1403695045812
2001-07-01	16.3346871879117
2001-10-01	16.6198910989264
2002-01-01	16.5323078431107
2002-04-01	16.6702627876568
2002-07-01	16.8047774138618
2002-10-01	17.1968222477734
2003-01-01	17.6711136577233
2003-04-01	17.9875014446616
2003-07-01	18.2863795375212
2003-10-01	18.3739498869529
2004-01-01	18.2645724841551
2004-04-01	18.4274557585467
2004-07-01	18.1289003263362
2004-10-01	18.3192447806891
2005-01-01	18.5529926678697
2005-04-01	18.5129289762178
2005-07-01	18.4338975055213
2005-10-01	18.0370042789726
2006-01-01	18.3647278782327
2006-04-01	18.6743520962133
2006-07-01	18.8432200503810
2006-10-01	19.0942964910719
2007-01-01	18.6979079366929
2007-04-01	18.6926684767709
2007-07-01	18.3416831658835
2007-10-01	17.7386093149174
2008-01-01	17.3395803998158
2008-04-01	16.9463652266484
2008-07-01	17.0840257983090
2008-10-01	17.6521603509741
2009-01-01	17.9886656221402
2009-04-01	18.1277446156151
2009-07-01	19.3265210362056
2009-10-01	19.4583137232639
2010-01-01	19.1844287292322
2010-04-01	19.0821477675007
2010-07-01	19.7328149427847
2010-10-01	19.5349471815700
2011-01-01	20.4060001090931
2011-04-01	20.4606458302710
2011-07-01	19.8624211077492
2011-10-01	19.5862747911832
2012-01-01	19.2005861947444
2012-04-01	19.3355151459219
2012-07-01	19.5569530436242
2012-10-01	19.5486364073913
2013-01-01	19.7072897553624
2013-04-01	19.6432293129879
2013-07-01	19.7615673603017
2013-10-01	19.9817578238092
2014-01-01	20.0768875846425
2014-04-01	20.0156776737526
2014-07-01	19.8848126087672
2014-10-01	19.7688598192777
2015-01-01	19.7419242463168
2015-04-01	19.6512669615347
2015-07-01	19.6109844748550
2015-10-01	19.7477842957764
2016-01-01	19.5291481638557
2016-04-01	19.8352618046334
2016-07-01	19.8932100511666
2016-10-01	20.2286883563790
2017-01-01	20.5484614734868
2017-04-01	20.8274810839160
2017-07-01	20.8073227860837
2017-10-01	20.5489447528283
2018-01-01	20.2059849772847
2018-04-01	19.9412132804434