Quarter	Percent, Seasonally Adjusted
2000-01-01	51.3560132463661
2000-04-01	52.1284226832792
2000-07-01	52.7758923884762
2000-10-01	53.1013143740557
2001-01-01	53.3355831908357
2001-04-01	53.6108529649184
2001-07-01	53.7860138300302
2001-10-01	53.9749262849750
2002-01-01	54.2051204137732
2002-04-01	54.2694895528454
2002-07-01	54.7555867660713
2002-10-01	54.7935070150281
2003-01-01	54.6721327419892
2003-04-01	54.3807797969227
2003-07-01	54.3327423354238
2003-10-01	54.0301114614399
2004-01-01	54.0990612688146
2004-04-01	54.1276141034814
2004-07-01	54.2276283154952
2004-10-01	54.2178013824321
2005-01-01	54.1783912364998
2005-04-01	54.5248156466418
2005-07-01	54.6044237727753
2005-10-01	54.8196260183382
2006-01-01	55.1452907093060
2006-04-01	55.2946369365889
2006-07-01	55.5430150669852
2006-10-01	56.0566710548191
2007-01-01	56.5324239070634
2007-04-01	57.1233562332820
2007-07-01	57.2324456749140
2007-10-01	57.5106202011818
2008-01-01	57.6737036740036
2008-04-01	57.9082139233711
2008-07-01	58.3715944637190
2008-10-01	58.5113278243670
2009-01-01	59.0045687485995
2009-04-01	58.3564843023030
2009-07-01	58.0858658738455
2009-10-01	57.8662754355012
2010-01-01	56.3068676331243
2010-04-01	56.3708575980100
2010-07-01	56.2238184945105
2010-10-01	56.1520507134133
2011-01-01	55.6610204992673
2011-04-01	55.5181730233296
2011-07-01	55.4159146972200
2011-10-01	55.7173909023497
2012-01-01	55.5989587704910
2012-04-01	55.5622950933754
2012-07-01	55.6842805710860
2012-10-01	55.5462467899978
2013-01-01	55.2978121330526
2013-04-01	55.0763459838934
2013-07-01	54.7956099787704
2013-10-01	54.4873254760208
2014-01-01	53.8182876095158
2014-04-01	53.6814186082888
2014-07-01	53.9233056168456
2014-10-01	54.2814236651444
2015-01-01	54.4262303654146
2015-04-01	54.6172162519516
2015-07-01	54.5572908202154
2015-10-01	54.4886582597951
2016-01-01	54.4178384160338
2016-04-01	54.8387350781573
2016-07-01	55.0167309293165
2016-10-01	55.1613574611070
2017-01-01	55.3642507230918
2017-04-01	55.5656722973753
2017-07-01	55.9200324645456
2017-10-01	55.9786386494948
2018-01-01	56.0670229734450
2018-04-01	56.5594766235933