Quarter	Percent, Seasonally Adjusted
1998-01-01	64.5571560599693
1998-04-01	64.3966102652809
1998-07-01	64.3943264586574
1998-10-01	64.6083723162307
1999-01-01	64.5630125080105
1999-04-01	64.5152324548949
1999-07-01	64.5309711211736
1999-10-01	64.6054357015861
2000-01-01	64.4205786563990
2000-04-01	64.1698614517630
2000-07-01	63.9764944521038
2000-10-01	63.7954304989742
2001-01-01	64.0214722947665
2001-04-01	63.7176439821083
2001-07-01	63.6691870265991
2001-10-01	63.5518770993829
2002-01-01	63.5178534556148
2002-04-01	63.7270670223921
2002-07-01	63.8663924324343
2002-10-01	63.8589081095724
2003-01-01	63.6444726286877
2003-04-01	63.6064695599666
2003-07-01	63.3228855776810
2003-10-01	63.1983339202975
2004-01-01	63.2813433793268
2004-04-01	63.2802368364069
2004-07-01	63.2465904317052
2004-10-01	63.3834500180042
2005-01-01	63.5585796194627
2005-04-01	63.7638106857963
2005-07-01	63.9591156599233
2005-10-01	63.9235133056793
2006-01-01	63.9801691373729
2006-04-01	63.7975463721940
2006-07-01	63.6475301600953
2006-10-01	63.4884048998516
2007-01-01	63.4517799501802
2007-04-01	63.4248170687883
2007-07-01	63.3787395359133
2007-10-01	63.3539283277778
2008-01-01	63.2221639962130
2008-04-01	63.2165854400062
2008-07-01	62.9630775762012
2008-10-01	63.1195189266786
2009-01-01	63.2700299537696
2009-04-01	63.2990385168600
2009-07-01	63.4376523139437
2009-10-01	63.3337165031234
2010-01-01	63.0500953558909
2010-04-01	63.0135987398489
2010-07-01	63.1845904048766
2010-10-01	63.1216607753391
2011-01-01	63.1144553356170
2011-04-01	63.2447392457566
2011-07-01	63.0335806365734
2011-10-01	62.8567391126010
2012-01-01	63.0204671512619
2012-04-01	63.3719821971035
2012-07-01	63.6648313679778
2012-10-01	63.9382113407618
2013-01-01	64.0915115459891
2013-04-01	64.4161305232092
2013-07-01	64.3885501542376
2013-10-01	64.3991417164689
2014-01-01	64.3602292534949
2014-04-01	64.2288932655842
2014-07-01	64.2964226207858
2014-10-01	64.6065270329644
2015-01-01	64.6435180419796
2015-04-01	64.5497633106517
2015-07-01	64.5865380370210
2015-10-01	64.6493674305674
2016-01-01	65.0578677151806
2016-04-01	65.2563686948204
2016-07-01	65.3355220362608
2016-10-01	65.5876544187512
2017-01-01	65.5592898109335
2017-04-01	65.5086460764939
2017-07-01	65.9621511931387
2017-10-01	65.9395809290580
2018-01-01	66.1225748415260
2018-04-01	66.4257602057535