Quarter	Percent, Seasonally Adjusted
2001-01-01	69.0248550281064
2001-04-01	68.8687208105294
2001-07-01	69.5424178736722
2001-10-01	70.0911764547642
2002-01-01	69.9951296636552
2002-04-01	70.7841987729194
2002-07-01	70.4339913843451
2002-10-01	70.3935179217999
2003-01-01	70.3491264303389
2003-04-01	70.8896210274453
2003-07-01	71.0601999494147
2003-10-01	70.7603409509160
2004-01-01	71.1123813257724
2004-04-01	71.0395779245425
2004-07-01	71.5874004263616
2004-10-01	71.2511122377921
2005-01-01	72.3642673370352
2005-04-01	71.7159812987528
2005-07-01	72.7528997170871
2005-10-01	72.6247623295125
2006-01-01	73.0336294413528
2006-04-01	72.2391124938977
2006-07-01	71.9910370351392
2006-10-01	72.0269668305338
2007-01-01	72.3481460284229
2007-04-01	72.8029057772002
2007-07-01	73.2095912599274
2007-10-01	73.3052581174665
2008-01-01	73.7154126660323
2008-04-01	73.8045645404569
2008-07-01	73.1749429178927
2008-10-01	72.9154113741320
2009-01-01	73.0691198456611
2009-04-01	72.5112072455802
2009-07-01	73.3432250651232
2009-10-01	73.9849175729023
2010-01-01	73.6073526873175
2010-04-01	73.7966619694482
2010-07-01	74.2795821303790
2010-10-01	74.4197072617371
2011-01-01	74.4043481904060
2011-04-01	75.4556741338153
2011-07-01	75.1144709033250
2011-10-01	75.7076636564654
2012-01-01	75.8963012451316
2012-04-01	76.3100461094279
2012-07-01	76.3545566490608
2012-10-01	76.5777351784232
2013-01-01	76.4459780277089
2013-04-01	76.4954716630341
2013-07-01	77.1427427747688
2013-10-01	77.4233861511222
2014-01-01	76.1881443664479
2014-04-01	76.8707557002718
2014-07-01	76.0647457688015
2014-10-01	76.6995711981671
2015-01-01	77.0112888837520
2015-04-01	76.7316697283707
2015-07-01	76.4066625354810
2015-10-01	77.1535110958438
2016-01-01	77.2392872056356
2016-04-01	76.8975331488171
2016-07-01	78.0790650809399
2016-10-01	77.6405003676214
2017-01-01	77.8010884409217
2017-04-01	78.7457352376353
2017-07-01	78.4631984126206
2017-10-01	78.5730728998256
2018-01-01	79.6097953574775
2018-04-01	79.8492324332540