Quarter	Percent, Seasonally Adjusted
1999-01-01	75.7350933011504
1999-04-01	76.1857332098262
1999-07-01	78.0074661812097
1999-10-01	77.7435809389011
2000-01-01	76.8866826451307
2000-04-01	76.6650864644590
2000-07-01	74.8887181035690
2000-10-01	75.3526133294178
2001-01-01	73.8375384401735
2001-04-01	75.8230855402175
2001-07-01	72.7466609511008
2001-10-01	71.5092408207674
2002-01-01	72.7356968968016
2002-04-01	73.9606933606192
2002-07-01	75.8298024919591
2002-10-01	76.6765383519376
2003-01-01	75.5481655548995
2003-04-01	76.9322164896154
2003-07-01	77.5747366089332
2003-10-01	72.9667316431043
2004-01-01	71.6266949465504
2004-04-01	69.6160134613213
2004-07-01	69.1481538000230
2004-10-01	69.8400211145696
2005-01-01	69.7546308910504
2005-04-01	68.2283653111275
2005-07-01	67.0321075991089
2005-10-01	66.7015611582552
2006-01-01	65.8912145781069
2006-04-01	66.2384764910013
2006-07-01	67.1829479292772
2006-10-01	67.1029043962158
2007-01-01	67.3274731504911
2007-04-01	64.7419389255900
2007-07-01	64.2359829662202
2007-10-01	65.4154069967597
2008-01-01	66.5462248853356
2008-04-01	65.5929084000807
2008-07-01	66.0644391883630
2008-10-01	65.2407056350081
2009-01-01	64.8097627063441
2009-04-01	63.1150398958634
2009-07-01	62.1590541757438
2009-10-01	62.5295513026081
2010-01-01	63.0480952524674
2010-04-01	63.6347528579982
2010-07-01	63.3477233672518
2010-10-01	63.8037920905602
2011-01-01	67.4336209810340
2011-04-01	67.5910976082233
2011-07-01	65.6504755060079
2011-10-01	66.0577013651959
2012-01-01	65.6629922184477
2012-04-01	65.5579714471687
2012-07-01	65.2320612498943
2012-10-01	63.3172331056201
2013-01-01	64.1106876450684
2013-04-01	63.9226130890509
2013-07-01	63.8881630010317
2013-10-01	63.9780328730011
2014-01-01	63.5033176086818
2014-04-01	61.5602855382340
2014-07-01	60.6643289371621
2014-10-01	60.6401021948412
2015-01-01	61.3870445045441
2015-04-01	59.8661810943739
2015-07-01	59.5762623315990
2015-10-01	60.4356660504081
2016-01-01	58.9966544466276
2016-04-01	58.6652422063707
2016-07-01	60.0998492148655
2016-10-01	57.4630033442200
2017-01-01	55.7418792598232
2017-04-01	54.5873040870969
2017-07-01	54.1468603643033
2017-10-01	53.0293743849580
2018-01-01	52.7509534559794
2018-04-01	50.5061314717927