Quarter	Percent, Seasonally Adjusted
2001-01-01	66.8370345891128
2001-04-01	66.6424382246070
2001-07-01	66.7434059189740
2001-10-01	66.6809038445408
2002-01-01	66.5057654049340
2002-04-01	66.3257776715297
2002-07-01	66.2382096445285
2002-10-01	66.3116964997218
2003-01-01	66.0105178670868
2003-04-01	66.2420568886138
2003-07-01	66.2765741329484
2003-10-01	66.2769308351575
2004-01-01	66.3536906184616
2004-04-01	66.0502117686288
2004-07-01	65.8996855864703
2004-10-01	65.7140546226078
2005-01-01	65.7717141172822
2005-04-01	67.7182947052048
2005-07-01	67.4023130199476
2005-10-01	67.4873448662686
2006-01-01	67.3475830644403
2006-04-01	67.5791753527337
2006-07-01	67.6561654374211
2006-10-01	67.7994267928949
2007-01-01	67.9528229095801
2007-04-01	67.5876952994085
2007-07-01	67.8722341451589
2007-10-01	67.7943367720094
2008-01-01	68.1483894198610
2008-04-01	68.4220986851394
2008-07-01	68.1828033485909
2008-10-01	67.9946793739564
2009-01-01	67.2883871977978
2009-04-01	67.3552387003955
2009-07-01	67.1867967453410
2009-10-01	67.4346663064084
2010-01-01	67.4795781434732
2010-04-01	67.6718333637650
2010-07-01	67.8646869553342
2010-10-01	67.7741292399440
2011-01-01	67.8057968800157
2011-04-01	67.8959902552339
2011-07-01	67.7460452014493
2011-10-01	67.7222081915920
2012-01-01	67.5583556569416
2012-04-01	67.7363870096150
2012-07-01	67.9446568788018
2012-10-01	68.0611871546320
2013-01-01	68.1512348617564
2013-04-01	68.0942868397973
2013-07-01	68.1311500731154
2013-10-01	68.2243293361338
2014-01-01	68.4082655090289
2014-04-01	68.5316471418375
2014-07-01	68.8089826537689
2014-10-01	68.7550761733593
2015-01-01	68.6074902970628
2015-04-01	68.3973579932473
2015-07-01	68.2563020082548
2015-10-01	68.3459391705078
2016-01-01	68.4332975001330
2016-04-01	68.5133907363958
2016-07-01	68.2636621963535
2016-10-01	68.6518259434698
2017-01-01	68.8505251038960
2017-04-01	69.1246217154276
2017-07-01	69.4603943051166
2017-10-01	69.2993024876858
2018-01-01	69.3613557006946
2018-04-01	69.2717728695174