Quarter	Percent, Seasonally Adjusted
1998-01-01	27.6896478016710
1998-04-01	27.7167107606098
1998-07-01	27.7130542980743
1998-10-01	27.6744472326760
1999-01-01	27.6097687227218
1999-04-01	27.6656263576232
1999-07-01	27.6663366994803
1999-10-01	27.6271133468786
2000-01-01	27.5840438735287
2000-04-01	27.6969973883697
2000-07-01	27.7096628788466
2000-10-01	27.6589084753253
2001-01-01	27.8733125087662
2001-04-01	27.5231834694592
2001-07-01	27.9582232204970
2001-10-01	28.4759748809051
2002-01-01	28.4861260326886
2002-04-01	28.8962484774148
2002-07-01	29.0486174727567
2002-10-01	29.2401432472074
2003-01-01	29.6961356414602
2003-04-01	30.1278325553954
2003-07-01	30.3995882120015
2003-10-01	30.7890669691959
2004-01-01	29.9745544812126
2004-04-01	30.3219381046210
2004-07-01	30.8085522893740
2004-10-01	31.0932292955223
2005-01-01	31.2571545490417
2005-04-01	31.2594378326307
2005-07-01	31.3675022149856
2005-10-01	31.7456411392719
2006-01-01	31.8154049762081
2006-04-01	32.4347117891227
2006-07-01	32.7267401527590
2006-10-01	32.7952616129796
2007-01-01	33.4614039445062
2007-04-01	33.5846866999110
2007-07-01	33.7679895247398
2007-10-01	33.9009555106217
2008-01-01	33.7813725650886
2008-04-01	34.0962394288799
2008-07-01	34.5267574254274
2008-10-01	34.8373920024519
2009-01-01	35.0930666988160
2009-04-01	35.7723893952366
2009-07-01	35.6691639041729
2009-10-01	35.9694752542069
2010-01-01	36.2121729204803
2010-04-01	36.3663889671317
2010-07-01	36.6328911407022
2010-10-01	36.8512986265187
2011-01-01	37.2328433429823
2011-04-01	37.3476768416449
2011-07-01	38.0539102807304
2011-10-01	38.6943203031883
2012-01-01	39.3961846677845
2012-04-01	40.1689865096195
2012-07-01	40.5803577215710
2012-10-01	41.0589478384164
2013-01-01	41.3994419301495
2013-04-01	42.1848521034581
2013-07-01	43.2061468065457
2013-10-01	43.9560564386215
2014-01-01	45.2202160347492
2014-04-01	45.8780097030560
2014-07-01	46.6578765149155
2014-10-01	47.1833614116838
2015-01-01	47.6865613305380
2015-04-01	48.1727458888254
2015-07-01	48.4311288300640
2015-10-01	48.6735586553903
2016-01-01	49.7143024348975
2016-04-01	50.1109871376640
2016-07-01	50.4767571717308
2016-10-01	51.0224307325335
2017-01-01	51.4274044834495
2017-04-01	52.0123886890701
2017-07-01	52.3274982009861
2017-10-01	53.0585381049029
2018-01-01	53.4193755052583
2018-04-01	53.8502571275195