Quarter	Percent, Seasonally Adjusted
1999-01-01	62.8879393395321
1999-04-01	62.7683892492282
1999-07-01	62.5815203754766
1999-10-01	62.3240655261219
2000-01-01	62.3739356922901
2000-04-01	62.8641470911478
2000-07-01	63.5375336769815
2000-10-01	62.9929631536465
2001-01-01	63.0927103606654
2001-04-01	62.2560557586197
2001-07-01	63.7704818980349
2001-10-01	63.8280333411096
2002-01-01	63.9074331465630
2002-04-01	63.6538516335234
2002-07-01	62.5517640933066
2002-10-01	61.7855085965763
2003-01-01	62.2692348537763
2003-04-01	61.8859206899458
2003-07-01	61.3732331631532
2003-10-01	62.9279519147297
2004-01-01	64.0953863790055
2004-04-01	65.3404681805738
2004-07-01	65.8700754345324
2004-10-01	64.6441095464308
2005-01-01	65.7263936535195
2005-04-01	65.5518251114884
2005-07-01	66.1783109837450
2005-10-01	66.9187721959859
2006-01-01	67.3063691241893
2006-04-01	67.7468430495500
2006-07-01	66.1868587863710
2006-10-01	65.7529233312413
2007-01-01	66.1156081768413
2007-04-01	67.0291304204049
2007-07-01	66.8298854031945
2007-10-01	66.4258137292953
2008-01-01	66.7825589776628
2008-04-01	66.8172627712327
2008-07-01	68.0542194532955
2008-10-01	68.4869838873631
2009-01-01	67.4525239152838
2009-04-01	67.3012105660510
2009-07-01	68.4404900119925
2009-10-01	68.2572911614988
2010-01-01	67.6326062619624
2010-04-01	68.1719237733090
2010-07-01	66.4049906566921
2010-10-01	67.3829198252398
2011-01-01	66.0924070389916
2011-04-01	65.9296938826813
2011-07-01	66.1831938426858
2011-10-01	67.6254161523015
2012-01-01	67.7101305044325
2012-04-01	66.0913068656408
2012-07-01	66.7746351288796
2012-10-01	67.0785942232241
2013-01-01	66.6364867422570
2013-04-01	66.3935110812066
2013-07-01	67.0582574879073
2013-10-01	66.2661825685665
2014-01-01	67.2708411507720
2014-04-01	67.7340623465937
2014-07-01	67.1455709641896
2014-10-01	66.8228018542157
2015-01-01	66.8696244689288
2015-04-01	68.4375766588695
2015-07-01	68.6792274415960
2015-10-01	67.7898365629091
2016-01-01	67.8984162553699
2016-04-01	68.8912229065913
2016-07-01	67.7894241831701
2016-10-01	69.7908138883674
2017-01-01	70.6543795937907
2017-04-01	70.3308020636889
2017-07-01	71.8191636921264
2017-10-01	72.1163644890512
2018-01-01	71.6248816526435
2018-04-01	71.3658546335587