Quarter	Percent, Seasonally Adjusted
1999-01-01	68.5655923699508
1999-04-01	69.0163216403196
1999-07-01	69.5613402399160
1999-10-01	70.0131895922689
2000-01-01	70.5526288829723
2000-04-01	70.9326032600134
2000-07-01	71.4387959678325
2000-10-01	71.8714854759923
2001-01-01	72.1382385412194
2001-04-01	72.4147347308714
2001-07-01	72.5569770422455
2001-10-01	72.7079566937396
2002-01-01	72.5742504918336
2002-04-01	72.7032861955272
2002-07-01	72.5719354172650
2002-10-01	72.6813470957953
2003-01-01	72.9432288452996
2003-04-01	73.0892809821461
2003-07-01	73.3391222892840
2003-10-01	73.4906643238019
2004-01-01	73.3406221998122
2004-04-01	73.4244986373533
2004-07-01	73.6081538357482
2004-10-01	74.0864711044953
2005-01-01	74.5534617278860
2005-04-01	74.9239061072654
2005-07-01	75.4010909491034
2005-10-01	75.5689920814118
2006-01-01	75.9231743233774
2006-04-01	75.9375820824062
2006-07-01	76.1282199078156
2006-10-01	76.2293408798317
2007-01-01	76.2129380477472
2007-04-01	76.4307165721404
2007-07-01	76.1336042852233
2007-10-01	75.6446887646203
2008-01-01	75.2816019463035
2008-04-01	74.3048854116206
2008-07-01	72.9929222545452
2008-10-01	70.7968396683426
2009-01-01	68.1198960082790
2009-04-01	66.8703336824122
2009-07-01	65.6934170230566
2009-10-01	65.3116531735906
2010-01-01	64.9955238708135
2010-04-01	65.0047257005652
2010-07-01	64.6597838629283
2010-10-01	64.3994486573117
2011-01-01	64.2139662046917
2011-04-01	63.7436199234558
2011-07-01	63.1274209915834
2011-10-01	62.3548256517627
2012-01-01	61.2574445899234
2012-04-01	60.5694034378635
2012-07-01	59.9245104168274
2012-10-01	59.3527396197261
2013-01-01	59.0955648721804
2013-04-01	59.1807683583000
2013-07-01	59.1300429282139
2013-10-01	59.5417720876002
2014-01-01	59.6332265924888
2014-04-01	60.4442045086302
2014-07-01	60.9877776894674
2014-10-01	61.5814190022352
2015-01-01	62.0308399337897
2015-04-01	62.7572848043062
2015-07-01	63.1709571820552
2015-10-01	63.7164696734685
2016-01-01	64.3496775860830
2016-04-01	64.4659555701679
2016-07-01	64.8720082647366
2016-10-01	65.3394081696560
2017-01-01	65.8478732123056
2017-04-01	66.2696375933286
2017-07-01	66.7744874836307
2017-10-01	67.0610222207070
2018-01-01	67.2964761207318
2018-04-01	67.7732486769292
2018-07-01	68.0071791162051