Quarter	Percent, Seasonally Adjusted
1999-01-01	72.1205785645891
1999-04-01	71.8629861614463
1999-07-01	72.0019236973367
1999-10-01	71.7201389574042
2000-01-01	70.9781715838173
2000-04-01	71.1260654997161
2000-07-01	71.0965205350217
2000-10-01	71.5826326096321
2001-01-01	71.4336023989876
2001-04-01	70.9101030288750
2001-07-01	71.6993773109665
2001-10-01	72.1819589277853
2002-01-01	70.7621595633574
2002-04-01	71.3099649170990
2002-07-01	71.5096362632155
2002-10-01	70.9703932737155
2003-01-01	71.5708169883345
2003-04-01	71.4968791520880
2003-07-01	71.5281530734169
2003-10-01	71.0349927835638
2004-01-01	71.5251325096991
2004-04-01	71.7247153422104
2004-07-01	72.2194725546858
2004-10-01	70.9637309740085
2005-01-01	71.5893558270347
2005-04-01	71.2773055210274
2005-07-01	70.6135940359590
2005-10-01	70.9157485752320
2006-01-01	70.7877178286326
2006-04-01	70.8728265674970
2006-07-01	71.1757607270518
2006-10-01	71.5860015291620
2007-01-01	71.7723152903374
2007-04-01	71.1059307469544
2007-07-01	70.5339501552904
2007-10-01	70.3755777020098
2008-01-01	70.5600675156862
2008-04-01	71.3733180144002
2008-07-01	71.6027714841969
2008-10-01	71.3408411464858
2009-01-01	70.8821949116293
2009-04-01	70.4218378779090
2009-07-01	70.3370934498155
2009-10-01	69.1552852890540
2010-01-01	69.6664707154110
2010-04-01	69.3828252823664
2010-07-01	68.4023889957750
2010-10-01	68.8656374445020
2011-01-01	68.7638553304375
2011-04-01	68.4401636158080
2011-07-01	68.2827910375368
2011-10-01	68.0733033003968
2012-01-01	67.8796690431242
2012-04-01	67.6899918846292
2012-07-01	66.8278114740035
2012-10-01	67.1813860293194
2013-01-01	67.0147192493554
2013-04-01	66.2062096667563
2013-07-01	66.1230770892978
2013-10-01	65.6175631588534
2014-01-01	66.0197287147247
2014-04-01	66.0674837016176
2014-07-01	66.8454393109034
2014-10-01	66.8376367289566
2015-01-01	66.7790791761744
2015-04-01	66.7148680603824
2015-07-01	66.3936238406820
2015-10-01	67.0795890489033
2016-01-01	67.5456567980872
2016-04-01	68.0318346257758
2016-07-01	67.8069226041566
2016-10-01	67.7062003297661
2017-01-01	66.3815213356908
2017-04-01	66.3912155245667
2017-07-01	66.3580757784263
2017-10-01	66.4074718456601
2018-01-01	66.1434263249100
2018-04-01	66.8606638027076