Quarter	Percent, Seasonally Adjusted
1999-01-01	53.7020814715031
1999-04-01	52.9260948263212
1999-07-01	52.3841972058936
1999-10-01	52.0213679368756
2000-01-01	51.8377607187548
2000-04-01	51.4117308960482
2000-07-01	51.4309388848137
2000-10-01	51.6691445085573
2001-01-01	51.6081882333372
2001-04-01	51.8153540175972
2001-07-01	51.7209264168163
2001-10-01	51.6808889777889
2002-01-01	51.5285177722087
2002-04-01	51.5251366590532
2002-07-01	51.7097757555087
2002-10-01	52.0391883260352
2003-01-01	52.2178421679897
2003-04-01	52.8000618077270
2003-07-01	52.7591728311736
2003-10-01	52.4635863183908
2004-01-01	51.7675205659379
2004-04-01	51.9649979032133
2004-07-01	52.3199943583704
2004-10-01	52.3935882261929
2005-01-01	52.4695480825034
2005-04-01	52.6589525903308
2005-07-01	52.8846480559179
2005-10-01	53.4568381559988
2006-01-01	53.7195659475634
2006-04-01	54.3799367434584
2006-07-01	54.6774693523750
2006-10-01	54.9703335973318
2007-01-01	55.2715161784803
2007-04-01	55.4058856402457
2007-07-01	55.4891516149169
2007-10-01	56.2071902986888
2008-01-01	56.4443354246746
2008-04-01	56.6852462143761
2008-07-01	57.7121724243975
2008-10-01	57.5567159139062
2009-01-01	56.1514107955731
2009-04-01	55.4522250296971
2009-07-01	54.8826910058763
2009-10-01	54.1036190186582
2010-01-01	53.3952630306922
2010-04-01	53.7124594488602
2010-07-01	53.9181468120641
2010-10-01	54.1908132272539
2011-01-01	53.9578008789596
2011-04-01	54.3513427293551
2011-07-01	54.3075400103340
2011-10-01	54.1611024784385
2012-01-01	54.5210038367604
2012-04-01	54.5924647809081
2012-07-01	54.4813898547178
2012-10-01	54.0403248389849
2013-01-01	54.4908962161093
2013-04-01	54.3134037508656
2013-07-01	54.2257647709656
2013-10-01	54.2642315326493
2014-01-01	54.5852984497484
2014-04-01	54.9056686656852
2014-07-01	55.2481798849985
2014-10-01	55.7336880862725
2015-01-01	55.9917310406788
2015-04-01	56.3565914385193
2015-07-01	56.6435133298969
2015-10-01	57.1393434449167
2016-01-01	57.6485226988680
2016-04-01	58.1614139313107
2016-07-01	58.3283076593267
2016-10-01	58.5944677994636
2017-01-01	58.9356752108482
2017-04-01	59.1181245634544
2017-07-01	59.3404325210458
2017-10-01	59.3132236697897
2018-01-01	59.7079689967571
2018-04-01	59.8982619861365