Quarter	Percent, Seasonally Adjusted
1999-01-01	72.1160566561561
1999-04-01	72.0977785230306
1999-07-01	72.1946135770079
1999-10-01	71.9334502471238
2000-01-01	72.1412588932986
2000-04-01	71.8934435844750
2000-07-01	71.0435908458874
2000-10-01	71.6384255547467
2001-01-01	71.9208646174716
2001-04-01	71.3559739847796
2001-07-01	72.3418557262422
2001-10-01	72.9080682317671
2002-01-01	71.7688406387160
2002-04-01	72.2564270157670
2002-07-01	71.8097933289765
2002-10-01	71.8281200707575
2003-01-01	71.6476576520565
2003-04-01	72.0712820898052
2003-07-01	72.1695383964039
2003-10-01	71.9133171679597
2004-01-01	72.2562017230516
2004-04-01	72.4981853204916
2004-07-01	73.1342348682429
2004-10-01	72.1905975649816
2005-01-01	72.3790797602178
2005-04-01	71.8058445464779
2005-07-01	71.7186891686269
2005-10-01	72.3630434706608
2006-01-01	72.3007410040536
2006-04-01	72.2143537653081
2006-07-01	72.5455047856911
2006-10-01	72.6320505105418
2007-01-01	72.7063406113504
2007-04-01	72.1277203249017
2007-07-01	71.5818436191374
2007-10-01	71.5470694849786
2008-01-01	71.7210651845938
2008-04-01	72.3419736887183
2008-07-01	72.3904002801222
2008-10-01	72.4829783754361
2009-01-01	72.1257797765459
2009-04-01	71.8818257344984
2009-07-01	71.5183813795100
2009-10-01	70.4715306516126
2010-01-01	70.7883737155851
2010-04-01	70.7887633882670
2010-07-01	70.1697577885636
2010-10-01	70.0742010907224
2011-01-01	70.2572693567339
2011-04-01	70.1869289593097
2011-07-01	70.0231909913173
2011-10-01	69.7100860129236
2012-01-01	69.7051084952844
2012-04-01	69.7236870153266
2012-07-01	68.8277368063319
2012-10-01	68.8397917358125
2013-01-01	68.7911003151180
2013-04-01	68.5100927241537
2013-07-01	68.4050764106834
2013-10-01	67.9109830547710
2014-01-01	67.8704526170792
2014-04-01	67.9013720667532
2014-07-01	68.5888407315098
2014-10-01	68.9202233380629
2015-01-01	68.7304299002100
2015-04-01	68.2862110536188
2015-07-01	68.0732116931675
2015-10-01	68.7901475150944
2016-01-01	70.0685032157376
2016-04-01	70.3988152989230
2016-07-01	69.9108726924096
2016-10-01	69.8783551612245
2017-01-01	68.8261958232648
2017-04-01	68.6402728258067
2017-07-01	68.9548570518358
2017-10-01	68.8600965413924
2018-01-01	69.0358377995375
2018-04-01	69.5245718248162