Quarter	Percent, Seasonally Adjusted
1999-01-01	58.8960947851662
1999-04-01	56.7741467822670
1999-07-01	55.8081565371201
1999-10-01	55.8516513310108
2000-01-01	58.8728539628150
2000-04-01	57.9914265697025
2000-07-01	58.4123988893524
2000-10-01	57.8172970953412
2001-01-01	59.3972600287306
2001-04-01	58.6623175438520
2001-07-01	59.7927923352174
2001-10-01	60.1386448301833
2002-01-01	55.9634339706027
2002-04-01	58.6041698409369
2002-07-01	61.4977872420479
2002-10-01	62.2338778217754
2003-01-01	59.6268315427479
2003-04-01	60.4494926724325
2003-07-01	62.9639976940774
2003-10-01	57.4318881246960
2004-01-01	54.9141483459937
2004-04-01	55.6701629971653
2004-07-01	54.6150162986446
2004-10-01	54.4566522365504
2005-01-01	52.6424661373794
2005-04-01	57.8861174523534
2005-07-01	55.8747536910346
2005-10-01	55.4971956274683
2006-01-01	56.1125731040699
2006-04-01	54.2167009090840
2006-07-01	54.5409100690832
2006-10-01	57.5316508603012
2007-01-01	52.7981731977486
2007-04-01	52.7464418800763
2007-07-01	51.0151326094430
2007-10-01	52.8320244999025
2008-01-01	53.8180730286010
2008-04-01	52.5688058250645
2008-07-01	49.3371747719416
2008-10-01	53.4461312374460
2009-01-01	56.6477408786281
2009-04-01	55.3525082082850
2009-07-01	52.4975168458928
2009-10-01	54.0519181806970
2010-01-01	53.9512135074732
2010-04-01	56.5628221332900
2010-07-01	56.8837531243270
2010-10-01	55.2313234639992
2011-01-01	57.5232836485607
2011-04-01	58.6178231821951
2011-07-01	57.3309809812094
2011-10-01	58.6243007732278
2012-01-01	62.0546400126847
2012-04-01	61.6270604212242
2012-07-01	62.3522162043320
2012-10-01	61.3815923842469
2013-01-01	63.2478860008628
2013-04-01	61.0095825702814
2013-07-01	63.4852716073098
2013-10-01	63.7771387111103
2014-01-01	63.9974928010426
2014-04-01	63.3338114887034
2014-07-01	64.8407329019100
2014-10-01	61.5008246276720
2015-01-01	61.4326759874462
2015-04-01	61.1547439616502
2015-07-01	61.2134602681777
2015-10-01	60.4982899886186
2016-01-01	62.2548340993950
2016-04-01	64.5523283019263
2016-07-01	63.9841723581355
2016-10-01	61.9535250784592
2017-01-01	58.4113565226704
2017-04-01	56.1376375070564
2017-07-01	55.5160153729439
2017-10-01	58.5711151258763
2018-01-01	57.2390791704869
2018-04-01	53.8128222946582