Quarter	Percent, Seasonally Adjusted
1999-04-01	79.1566783268997
1999-07-01	79.4460393137248
1999-10-01	79.7120053045358
2000-01-01	79.8329020685637
2000-04-01	79.9706190902009
2000-07-01	79.9720274495801
2000-10-01	79.8569942258632
2001-01-01	79.8985415343916
2001-04-01	79.9291336828863
2001-07-01	80.1096882487182
2001-10-01	79.7282785351040
2002-01-01	79.4645324937652
2002-04-01	79.2913677226910
2002-07-01	79.0326030901657
2002-10-01	79.1888808124876
2003-01-01	79.1895842417863
2003-04-01	79.2157166361008
2003-07-01	79.1970049740570
2003-10-01	79.5214127238979
2004-01-01	79.8112985407401
2004-04-01	79.7658376484515
2004-07-01	79.9707024415106
2004-10-01	80.1227397891053
2005-01-01	80.1539281276136
2005-04-01	80.4458322890028
2005-07-01	80.9097425830207
2005-10-01	81.0317016201829
2006-01-01	81.4866654282274
2006-04-01	81.5691612438588
2006-07-01	81.8397205094454
2006-10-01	81.8118013903077
2007-01-01	85.2108214581773
2007-04-01	84.9037266957771
2007-07-01	84.5384821575859
2007-10-01	84.3854822005945
2008-01-01	84.1796977989500
2008-04-01	83.8254457222883
2008-07-01	83.4976791284160
2008-10-01	82.7168611759728
2009-01-01	81.6397120707890
2009-04-01	81.2645442270620
2009-07-01	80.0969636254258
2009-10-01	79.6999201408033
2010-01-01	79.2063681210377
2010-04-01	78.8298483261867
2010-07-01	78.4951348223926
2010-10-01	78.1810807338150
2011-01-01	78.0668418324020
2011-04-01	77.9061169111923
2011-07-01	77.5987780912410
2011-10-01	78.4448479025244
2012-01-01	78.0387631264526
2012-04-01	77.7672675661558
2012-07-01	77.8617064614716
2012-10-01	77.6611639151510
2013-01-01	77.9160203975924
2013-04-01	78.3649078884893
2013-07-01	78.4449917634132
2013-10-01	78.6827549630981
2014-01-01	78.6438863151076
2014-04-01	78.3584404032493
2014-07-01	78.4986056473824
2014-10-01	78.7505404870592
2015-01-01	79.0186319995163
2015-04-01	78.9948897333544
2015-07-01	78.8999155769898
2015-10-01	78.9755141320481
2016-01-01	78.9600384662380
2016-04-01	79.3843769091450
2016-07-01	79.4529730659892
2016-10-01	79.0311709751752
2017-01-01	78.9022551846469
2017-04-01	78.6863007647616
2017-07-01	78.6644269757527
2017-10-01	78.8539779244243
2018-01-01	78.9016722949066
2018-04-01	78.8172317446274