Quarter	Percent, Seasonally Adjusted
1999-01-01	75.4747753575485
1999-04-01	76.2231696074927
1999-07-01	75.0026336776781
1999-10-01	73.3884409405554
2000-01-01	71.6266483951391
2000-04-01	74.1658853250869
2000-07-01	73.2996781393704
2000-10-01	74.6782911443804
2001-01-01	72.9250076229216
2001-04-01	69.4875092344509
2001-07-01	70.4380087960265
2001-10-01	68.1065455561828
2002-01-01	69.8283252272083
2002-04-01	70.8121866435688
2002-07-01	70.9778107512940
2002-10-01	71.2470323594616
2003-01-01	68.3373103467528
2003-04-01	68.3171710215855
2003-07-01	67.8705675155661
2003-10-01	66.2940462240537
2004-01-01	70.7933657790298
2004-04-01	69.5491010699290
2004-07-01	72.3450399250243
2004-10-01	66.1283234359164
2005-01-01	71.6853099198772
2005-04-01	71.0428072333548
2005-07-01	68.2053706907801
2005-10-01	69.0898007857894
2006-01-01	69.2217459904990
2006-04-01	68.3557652520595
2006-07-01	72.3713058025328
2006-10-01	72.1875082188262
2007-01-01	73.5132980816068
2007-04-01	73.0498360189263
2007-07-01	70.9630644868728
2007-10-01	70.5611666546646
2008-01-01	70.0883919993318
2008-04-01	72.9974595775256
2008-07-01	73.2091016093136
2008-10-01	74.9245921677396
2009-01-01	74.7029066264696
2009-04-01	72.6296879226456
2009-07-01	71.5035748946927
2009-10-01	68.1439077645048
2010-01-01	67.9918483523108
2010-04-01	68.4073075096117
2010-07-01	66.3058492343380
2010-10-01	67.5744276822460
2011-01-01	67.8926242362086
2011-04-01	66.7064977926054
2011-07-01	67.4645940685217
2011-10-01	66.3457581258904
2012-01-01	64.9351714226666
2012-04-01	65.2182559164906
2012-07-01	63.6272164490961
2012-10-01	62.5843343541920
2013-01-01	62.6122686914591
2013-04-01	61.3567323797057
2013-07-01	60.7014191872329
2013-10-01	59.5320124955269
2014-01-01	60.6699591514639
2014-04-01	59.7333394393694
2014-07-01	61.8020463206786
2014-10-01	61.9503523170910
2015-01-01	60.9526702653991
2015-04-01	60.6549001490632
2015-07-01	62.3862327320272
2015-10-01	62.8977961879838
2016-01-01	63.9977394721383
2016-04-01	65.1351306875814
2016-07-01	65.9479227181004
2016-10-01	64.9427482334808
2017-01-01	63.7305997089550
2017-04-01	62.3084346825429
2017-07-01	62.5384844286820
2017-10-01	61.2217731453348
2018-01-01	61.7764723157120
2018-04-01	62.4087773929799