Quarter	Percent, Seasonally Adjusted
1999-01-01	77.1199331072347
1999-04-01	76.5885824378424
1999-07-01	76.8662318777300
1999-10-01	76.9116059019343
2000-01-01	76.7935093866341
2000-04-01	76.7107902301356
2000-07-01	76.7770305675641
2000-10-01	76.7506477842954
2001-01-01	77.0954010774223
2001-04-01	77.6344317680462
2001-07-01	77.4245008452754
2001-10-01	77.3449738644985
2002-01-01	76.9932552691781
2002-04-01	76.4787757920243
2002-07-01	76.5325649570875
2002-10-01	76.8342656428352
2003-01-01	76.6558245922061
2003-04-01	76.8249280214426
2003-07-01	76.8700334350711
2003-10-01	76.4906447844356
2004-01-01	76.4748273314822
2004-04-01	76.7279278877631
2004-07-01	76.5572241161062
2004-10-01	76.4230320067364
2005-01-01	76.3591169408274
2005-04-01	76.3607760362425
2005-07-01	76.3940368531860
2005-10-01	76.7899054423919
2006-01-01	76.8559623185472
2006-04-01	76.6219704838558
2006-07-01	76.2640412855005
2006-10-01	75.8917708878926
2007-01-01	75.7616827573169
2007-04-01	75.7188679825494
2007-07-01	76.1025275074437
2007-10-01	76.1721279019425
2008-01-01	76.2659596773307
2008-04-01	76.3572622688180
2008-07-01	76.4121455211611
2008-10-01	76.4485453271602
2009-01-01	76.3333465786238
2009-04-01	76.2202837325086
2009-07-01	76.3362979396322
2009-10-01	76.2468002037684
2010-01-01	75.8971865274165
2010-04-01	76.1165886807753
2010-07-01	76.0284337491300
2010-10-01	76.1723171796263
2011-01-01	76.2273219562792
2011-04-01	76.6981826836086
2011-07-01	76.5577464604972
2011-10-01	76.8139294486898
2012-01-01	77.1202650355838
2012-04-01	77.0229838593095
2012-07-01	77.2013567274610
2012-10-01	77.2102678917867
2013-01-01	77.5552875830057
2013-04-01	77.3220311391652
2013-07-01	77.0758931880964
2013-10-01	76.8882816727666
2014-01-01	77.3253614087981
2014-04-01	77.4983062891506
2014-07-01	77.7598089598113
2014-10-01	77.8864915383365
2015-01-01	77.5458659591512
2015-04-01	77.2896912760929
2015-07-01	77.4921497092026
2015-10-01	77.6726796548931
2016-01-01	77.8236505288803
2016-04-01	78.3283308549894
2016-07-01	78.3772568384698
2016-10-01	78.5170934887834
2017-01-01	78.4111966132486
2017-04-01	78.2624033877972
2017-07-01	78.1994848635523
2017-10-01	78.0367039931998
2018-01-01	78.4436008543470
2018-04-01	78.5284580755229