Quarter	Percent, Seasonally Adjusted
1999-01-01	76.2303587690127
1999-04-01	76.2830941875842
1999-07-01	76.1915218975597
1999-10-01	75.4579677115037
2000-01-01	76.2371356691751
2000-04-01	76.2749243779478
2000-07-01	75.9691789130755
2000-10-01	76.5513128878779
2001-01-01	75.8250483531946
2001-04-01	75.7286108875915
2001-07-01	76.3644440436456
2001-10-01	76.7419404053301
2002-01-01	76.0714981736909
2002-04-01	76.3035200018742
2002-07-01	75.5330005147222
2002-10-01	75.5946005615236
2003-01-01	75.0787180923244
2003-04-01	74.9804696043611
2003-07-01	75.4649285623398
2003-10-01	75.0260553400622
2004-01-01	75.1301156831810
2004-04-01	75.8557631005004
2004-07-01	76.1240296832313
2004-10-01	75.5829253050724
2005-01-01	75.8228427214236
2005-04-01	75.3820216897580
2005-07-01	75.6010275291082
2005-10-01	76.7800673554622
2006-01-01	77.1219443364846
2006-04-01	76.8171710079360
2006-07-01	77.6729381233386
2006-10-01	77.8769057068475
2007-01-01	77.5223494697888
2007-04-01	77.1390757884758
2007-07-01	76.5032007177714
2007-10-01	76.8962377418842
2008-01-01	77.2928185057105
2008-04-01	78.0205055842598
2008-07-01	78.1951954643070
2008-10-01	77.9506147153304
2009-01-01	76.6010020804203
2009-04-01	75.6073194629446
2009-07-01	75.3369208832680
2009-10-01	73.8392322309896
2010-01-01	73.7212685019477
2010-04-01	73.3868638079492
2010-07-01	73.2668181127138
2010-10-01	73.0033125311266
2011-01-01	73.2594648183549
2011-04-01	73.1536560681765
2011-07-01	73.2149757998498
2011-10-01	72.9700220529793
2012-01-01	73.0318485394383
2012-04-01	72.6492554657215
2012-07-01	72.2758144698775
2012-10-01	72.4182841718824
2013-01-01	72.7384619507489
2013-04-01	72.7885475556525
2013-07-01	72.4042978791628
2013-10-01	72.2193969180065
2014-01-01	71.9740844225142
2014-04-01	72.5147138393915
2014-07-01	73.1561048616011
2014-10-01	73.5617345911443
2015-01-01	73.6267293454364
2015-04-01	73.3326772977272
2015-07-01	73.1885765513743
2015-10-01	73.8724936839037
2016-01-01	75.0823855093900
2016-04-01	75.1383045771582
2016-07-01	74.7246571626733
2016-10-01	74.5772857708526
2017-01-01	73.9041620024098
2017-04-01	73.9752765571644
2017-07-01	74.3316783219580
2017-10-01	74.6137789168694
2018-01-01	75.0386372308148
2018-04-01	75.4980566938204