Quarter	Percent, Seasonally Adjusted
2000-01-01	58.0615135499292
2000-04-01	59.0822591649750
2000-07-01	58.9235136815934
2000-10-01	59.7406979557207
2001-01-01	60.9038535778650
2001-04-01	60.5712360949193
2001-07-01	60.8248294385144
2001-10-01	61.4636707239708
2002-01-01	61.0050759539281
2002-04-01	62.8436081040698
2002-07-01	62.0532052203707
2002-10-01	61.0898703227202
2003-01-01	63.0271753031670
2003-04-01	61.3612386905419
2003-07-01	62.1546799655424
2003-10-01	62.5029942432861
2004-01-01	60.7559041491850
2004-04-01	60.8279877193066
2004-07-01	60.3455317266787
2004-10-01	60.5405410408750
2005-01-01	60.5869854507398
2005-04-01	59.1082842312264
2005-07-01	60.5126739908017
2005-10-01	60.3775190895091
2006-01-01	61.3875957347839
2006-04-01	60.8847810377464
2006-07-01	61.9624742247688
2006-10-01	62.0738490231016
2007-01-01	62.9761168984366
2007-04-01	63.9942257623678
2007-07-01	64.3059730322303
2007-10-01	64.5783021019527
2008-01-01	64.2234269985055
2008-04-01	64.1121186175714
2008-07-01	64.0359583140772
2008-10-01	64.2849563112557
2009-01-01	64.4729526981729
2009-04-01	64.4002734866125
2009-07-01	64.6641032126343
2009-10-01	64.9836476225553
2010-01-01	64.7371273762075
2010-04-01	65.2509354119148
2010-07-01	64.3217492807176
2010-10-01	65.4697218544105
2011-01-01	65.6985840941064
2011-04-01	66.3234986371960
2011-07-01	66.2749280478968
2011-10-01	66.2329672906745
2012-01-01	66.7720360677384
2012-04-01	67.0104546469555
2012-07-01	67.0277495457851
2012-10-01	66.8579253739290
2013-01-01	66.3131764804361
2013-04-01	67.4042373330360
2013-07-01	67.3278349644439
2013-10-01	67.4069768967369
2014-01-01	67.7305074801049
2014-04-01	67.7284055027117
2014-07-01	68.8405792968494
2014-10-01	69.5580991666352
2015-01-01	68.3698105023082
2015-04-01	69.0406483886220
2015-07-01	68.8995785086067
2015-10-01	68.6933612892865
2016-01-01	69.4385721937868
2016-04-01	69.3433644120818
2016-07-01	69.5793597966275
2016-10-01	69.5900132296153
2017-01-01	69.5173505259745
2017-04-01	68.5425578439607
2017-07-01	68.5003936794976
2017-10-01	68.3337325245903
2018-01-01	67.6525641487102
2018-04-01	68.2686123249817