Quarter	Percent, Seasonally Adjusted
2002-01-01	60.2810529677039
2002-04-01	62.3285235320050
2002-07-01	61.3043989689358
2002-10-01	62.3153657219846
2003-01-01	61.5442054029375
2003-04-01	61.5773520248857
2003-07-01	62.5316257271769
2003-10-01	61.0474378381147
2004-01-01	62.3849410565986
2004-04-01	62.0954996897567
2004-07-01	61.8022414360705
2004-10-01	62.5404465978138
2005-01-01	61.7118276922194
2005-04-01	62.3892590486504
2005-07-01	61.7653782153542
2005-10-01	62.4919783319700
2006-01-01	63.4756526876006
2006-04-01	63.9824743328743
2006-07-01	64.9614971331360
2006-10-01	64.2427396728657
2007-01-01	64.3320557555282
2007-04-01	65.4182830723707
2007-07-01	66.2065362349344
2007-10-01	66.4730929527680
2008-01-01	67.1385095841986
2008-04-01	67.6130802802446
2008-07-01	66.8866686775917
2008-10-01	66.9981973128184
2009-01-01	67.7672806244804
2009-04-01	66.7530970770814
2009-07-01	64.2364330587174
2009-10-01	64.3652807353807
2010-01-01	64.8281822244055
2010-04-01	64.7370216849190
2010-07-01	64.7656956106498
2010-10-01	64.0938945894567
2011-01-01	63.9774446132409
2011-04-01	65.0175169113588
2011-07-01	64.2093162059537
2011-10-01	64.6042803515176
2012-01-01	65.3646866215572
2012-04-01	66.4487532008132
2012-07-01	66.0881920448576
2012-10-01	66.4019999312781
2013-01-01	66.2184732444335
2013-04-01	65.4376787860176
2013-07-01	66.5057952413438
2013-10-01	65.9460618963295
2014-01-01	66.8729986071062
2014-04-01	66.5148675502438
2014-07-01	66.0429376039616
2014-10-01	65.9109194437265
2015-01-01	66.8336282867115
2015-04-01	67.5250105969217
2015-07-01	67.6706970459652
2015-10-01	68.0421270252798
2016-01-01	68.2922414048972
2016-04-01	68.3970038206141
2016-07-01	68.0581089806579
2016-10-01	67.9206763344143
2017-01-01	68.3301689967620
2017-04-01	68.6890914499276
2017-07-01	69.2093385602154
2017-10-01	69.2554703838852
2018-01-01	69.5133002762233
2018-04-01	69.7637822104536