Quarter	Percent, Seasonally Adjusted
1999-01-01	68.9234617935918
1999-04-01	70.4151775150710
1999-07-01	71.2044369722761
1999-10-01	73.1543716681418
2000-01-01	68.1846144187554
2000-04-01	69.6621992178585
2000-07-01	70.6815653287058
2000-10-01	69.6725437595601
2001-01-01	70.4967222330360
2001-04-01	69.4783625213981
2001-07-01	70.2914886984125
2001-10-01	69.1845005651598
2002-01-01	69.8184348478227
2002-04-01	69.5818137333494
2002-07-01	68.9962886328628
2002-10-01	68.5569285431043
2003-01-01	68.6587894316459
2003-04-01	67.6956080839493
2003-07-01	68.0274201001079
2003-10-01	67.6161442364480
2004-01-01	72.4978620219045
2004-04-01	71.7586880290483
2004-07-01	71.6570865025095
2004-10-01	70.7487818447470
2005-01-01	70.1474903597878
2005-04-01	69.3070474198986
2005-07-01	68.2449416286388
2005-10-01	67.6772621161823
2006-01-01	66.3308600493317
2006-04-01	65.9698160369959
2006-07-01	65.6172831942378
2006-10-01	64.7021183631592
2007-01-01	63.9610498911689
2007-04-01	62.6642321623850
2007-07-01	62.2862008038775
2007-10-01	62.1411579547862
2008-01-01	60.0318302818528
2008-04-01	60.4399789984660
2008-07-01	60.4275979014092
2008-10-01	60.3691023082946
2009-01-01	60.3464337923659
2009-04-01	59.8751125423283
2009-07-01	59.1461814447182
2009-10-01	58.5406357994934
2010-01-01	57.7131510384837
2010-04-01	57.7937343507123
2010-07-01	57.0866548013030
2010-10-01	58.4515147223384
2011-01-01	58.4207115038553
2011-04-01	58.4411625641019
2011-07-01	58.4969182527934
2011-10-01	58.9099161912488
2012-01-01	58.4553179199140
2012-04-01	56.9293241083130
2012-07-01	56.2884385387150
2012-10-01	55.9329490076545
2013-01-01	55.7126658566597
2013-04-01	54.3040991389618
2013-07-01	54.2059019274620
2013-10-01	53.8970134769809
2014-01-01	54.3635009173883
2014-04-01	52.8545181758086
2014-07-01	52.8923866325079
2014-10-01	52.3602233985715
2015-01-01	52.3313154726321
2015-04-01	51.9303176175917
2015-07-01	51.1354481531354
2015-10-01	50.3175434892355
2016-01-01	49.3767932462336
2016-04-01	47.9495422684540
2016-07-01	47.8560221595535
2016-10-01	47.8748301923147
2017-01-01	47.5604121822860
2017-04-01	46.8991661421720
2017-07-01	46.0881386193933
2017-10-01	45.2220097346513
2018-01-01	44.4634654193980
2018-04-01	44.5179462481630