Quarter	Percent, Seasonally Adjusted
1999-01-01	78.3551751053633
1999-04-01	78.7146488768416
1999-07-01	78.5873887506874
1999-10-01	79.0462606768936
2000-01-01	78.9259524771027
2000-04-01	78.9360728767674
2000-07-01	79.3206800141848
2000-10-01	79.6029665872228
2001-01-01	79.5517911320730
2001-04-01	79.3144819337609
2001-07-01	79.4433915099294
2001-10-01	79.2775235979002
2002-01-01	79.8351382725371
2002-04-01	79.6082879812232
2002-07-01	79.7405785043931
2002-10-01	79.7709684502577
2003-01-01	79.5320702462657
2003-04-01	80.0716251933524
2003-07-01	80.3028623990162
2003-10-01	80.6442759145048
2004-01-01	80.6156204405061
2004-04-01	80.5466441039676
2004-07-01	80.4114690423559
2004-10-01	80.3448221743723
2005-01-01	80.3096327141427
2005-04-01	80.1497155465248
2005-07-01	80.4817951883233
2005-10-01	80.3986652429542
2006-01-01	80.8036847563221
2006-04-01	81.5102465860849
2006-07-01	81.3743024199698
2006-10-01	81.6951776987232
2007-01-01	81.6152498227911
2007-04-01	81.7414359032410
2007-07-01	81.6616414682140
2007-10-01	81.2637949670794
2008-01-01	81.6564922798144
2008-04-01	81.2557816214258
2008-07-01	81.4648138351289
2008-10-01	80.6613624386186
2009-01-01	79.8948247398334
2009-04-01	79.5041906217441
2009-07-01	78.2498156986490
2009-10-01	78.5937481468391
2010-01-01	77.7941631936176
2010-04-01	77.7109666776202
2010-07-01	78.1677726517271
2010-10-01	78.3788117212703
2011-01-01	78.6811011596722
2011-04-01	79.4564055018481
2011-07-01	79.7626567292576
2011-10-01	80.0032265673013
2012-01-01	80.2505042467918
2012-04-01	79.9740076181553
2012-07-01	80.2904501294907
2012-10-01	80.4056219719664
2013-01-01	79.6001839627279
2013-04-01	81.5277484597582
2013-07-01	81.9060956294987
2013-10-01	82.5332600899180
2014-01-01	84.9806707180562
2014-04-01	84.6654073827271
2014-07-01	85.7353033254180
2014-10-01	85.7178417028260
2015-01-01	86.2011774273921
2015-04-01	86.6912552804134
2015-07-01	87.0943203338625
2015-10-01	87.3543845095319
2016-01-01	87.6646867644920
2016-04-01	88.1188608968574
2016-07-01	88.1871418070215
2016-10-01	88.7898374862637
2017-01-01	89.5303308702875
2017-04-01	90.1283746036960
2017-07-01	90.1607283083267
2017-10-01	90.5391749701638
2018-01-01	90.9229864583759
2018-04-01	90.5548388550871