Quarter	Percent, Seasonally Adjusted
1999-01-01	71.5010674810498
1999-04-01	72.2615467485388
1999-07-01	71.5656473958488
1999-10-01	71.9654844230909
2000-01-01	71.1852369944313
2000-04-01	71.8048147846034
2000-07-01	72.4617880551926
2000-10-01	72.1236587691227
2001-01-01	72.7535019087507
2001-04-01	72.5565774495445
2001-07-01	73.3333192318793
2001-10-01	72.7451167555514
2002-01-01	74.1399951710138
2002-04-01	73.0354907082844
2002-07-01	71.2430542712956
2002-10-01	71.6449932368224
2003-01-01	72.0418033952176
2003-04-01	71.7140479296716
2003-07-01	71.1560617682653
2003-10-01	73.1248875319930
2004-01-01	73.8975941529606
2004-04-01	74.3121600829621
2004-07-01	75.0457404238924
2004-10-01	74.5704174739854
2005-01-01	75.0190530185482
2005-04-01	74.5206874400934
2005-07-01	74.9846420950830
2005-10-01	75.8366567747089
2006-01-01	75.2612780671817
2006-04-01	74.9154789642427
2006-07-01	74.9189443829704
2006-10-01	74.4785805389319
2007-01-01	74.8671818162584
2007-04-01	76.0922973174802
2007-07-01	76.3464295268365
2007-10-01	75.9083053278250
2008-01-01	75.5510723905043
2008-04-01	75.4596017574803
2008-07-01	76.6548853694946
2008-10-01	75.4668912392748
2009-01-01	74.4358255332699
2009-04-01	75.8903489227670
2009-07-01	76.0263181287568
2009-10-01	76.0929493929806
2010-01-01	76.2484062868922
2010-04-01	74.9661710380401
2010-07-01	74.9359827883584
2010-10-01	75.3320470967428
2011-01-01	74.3330216238602
2011-04-01	73.7048426157036
2011-07-01	73.7778648082920
2011-10-01	73.6464341405934
2012-01-01	73.4405021885234
2012-04-01	72.8273351013792
2012-07-01	73.6238399086562
2012-10-01	74.9503842172602
2013-01-01	74.7157248664488
2013-04-01	74.1289100378967
2013-07-01	74.1359550114790
2013-10-01	73.8522251898218
2014-01-01	73.8930268307481
2014-04-01	74.4569413944816
2014-07-01	74.0962220748519
2014-10-01	74.9315967091619
2015-01-01	75.0390326750224
2015-04-01	75.6727901380959
2015-07-01	75.9087474895990
2015-10-01	74.7992278106002
2016-01-01	74.0661668671051
2016-04-01	74.5269527351311
2016-07-01	74.3417031614162
2016-10-01	75.1646529459155
2017-01-01	76.4484190521102
2017-04-01	77.1526957616224
2017-07-01	77.2628310333594
2017-10-01	77.3614628266282
2018-01-01	77.6363983682528
2018-04-01	78.4892912493474