Quarter	Percent, Seasonally Adjusted
1999-01-01	22.9002639031833
1999-04-01	23.2078727774807
1999-07-01	23.1725451985292
1999-10-01	23.2020225689801
2000-01-01	24.0964707414024
2000-04-01	23.6811700536102
2000-07-01	24.0122184878460
2000-10-01	23.5442935820385
2001-01-01	23.5655157675346
2001-04-01	24.1222397476558
2001-07-01	23.2448475107402
2001-10-01	22.7115675901915
2002-01-01	23.8755778966863
2002-04-01	23.5309285185814
2002-07-01	23.2579567097434
2002-10-01	24.0134426118152
2003-01-01	23.0922438383162
2003-04-01	23.0905690438851
2003-07-01	23.2043637470846
2003-10-01	23.6877016785273
2004-01-01	23.1203962139221
2004-04-01	22.9390703875693
2004-07-01	22.4049206157962
2004-10-01	23.6342343934992
2005-01-01	23.1166614738026
2005-04-01	23.4865934315019
2005-07-01	24.0027255178895
2005-10-01	23.7604667108736
2006-01-01	23.9705750797765
2006-04-01	23.7896740149405
2006-07-01	23.3546231698207
2006-10-01	23.0450689211717
2007-01-01	22.9947100195840
2007-04-01	23.6939837933589
2007-07-01	24.3289284694351
2007-10-01	24.4713832554452
2008-01-01	24.3033276933212
2008-04-01	23.4509432462727
2008-07-01	23.2137636141717
2008-10-01	23.4495552034973
2009-01-01	23.9246781810269
2009-04-01	24.4301883095960
2009-07-01	24.5654375961033
2009-10-01	25.7266898310557
2010-01-01	25.1819923051459
2010-04-01	25.4864236785825
2010-07-01	26.5346673837101
2010-10-01	25.9581119106213
2011-01-01	26.0051643621575
2011-04-01	26.3642914626308
2011-07-01	26.5764386278830
2011-10-01	26.7251106871757
2012-01-01	26.9001038840950
2012-04-01	27.0848478959605
2012-07-01	28.0063867725843
2012-10-01	27.5707970190932
2013-01-01	27.6845724271012
2013-04-01	28.6698090171481
2013-07-01	28.7263925695629
2013-10-01	29.1792812908598
2014-01-01	28.7054755657870
2014-04-01	28.6667714429525
2014-07-01	27.7852613310030
2014-10-01	27.7146760814372
2015-01-01	27.7414871004894
2015-04-01	27.8030023231730
2015-07-01	28.1204966206141
2015-10-01	27.2888586347635
2016-01-01	26.7775202092351
2016-04-01	26.2312279506740
2016-07-01	26.4271725601443
2016-10-01	26.4477401933144
2017-01-01	27.8570413811382
2017-04-01	27.8154132310408
2017-07-01	27.7811543813593
2017-10-01	27.6097466938516
2018-01-01	27.8616276342108
2018-04-01	27.0377039395858