Quarter	Percent, Seasonally Adjusted
2001-01-01	66.2978117178223
2001-04-01	66.2809804907104
2001-07-01	67.3287858838674
2001-10-01	67.5870430438845
2002-01-01	67.8049317278890
2002-04-01	68.4936200195736
2002-07-01	68.1588826107680
2002-10-01	68.2850443165411
2003-01-01	68.5320512888011
2003-04-01	68.8365206293211
2003-07-01	69.2401835671961
2003-10-01	68.9927999259776
2004-01-01	68.9813681928684
2004-04-01	69.8284985168566
2004-07-01	69.9757595731058
2004-10-01	70.1600047656906
2005-01-01	69.5186229000262
2005-04-01	68.1865454878590
2005-07-01	68.5468601757114
2005-10-01	69.9164435218065
2006-01-01	70.5747976246176
2006-04-01	69.6666746674604
2006-07-01	69.0428417801668
2006-10-01	69.1206289320685
2007-01-01	69.0098575999604
2007-04-01	69.6477211254850
2007-07-01	69.9616971886117
2007-10-01	69.1127238673542
2008-01-01	68.3474921089852
2008-04-01	68.9163322682336
2008-07-01	69.5043628137563
2008-10-01	69.4123721956371
2009-01-01	69.9574211022199
2009-04-01	69.9338021102778
2009-07-01	69.7647463251730
2009-10-01	70.0625476303418
2010-01-01	69.9835625024544
2010-04-01	69.8240041397287
2010-07-01	70.3486642215023
2010-10-01	70.8248465526615
2011-01-01	72.0717902392704
2011-04-01	71.9663189552459
2011-07-01	71.9434449723534
2011-10-01	72.4141335189682
2012-01-01	72.0942637981965
2012-04-01	73.0697593140174
2012-07-01	73.1303943762876
2012-10-01	73.6766556703360
2013-01-01	73.0416169051001
2013-04-01	73.0969326576063
2013-07-01	73.1976240202861
2013-10-01	74.1665038443906
2014-01-01	74.4903820265926
2014-04-01	75.2201304687455
2014-07-01	75.2563370713725
2014-10-01	74.6352563986747
2015-01-01	75.1711386766844
2015-04-01	75.3008620313946
2015-07-01	75.5680018117783
2015-10-01	76.0253311127312
2016-01-01	75.9964809711183
2016-04-01	76.8632347695285
2016-07-01	77.1326434070616
2016-10-01	77.4886325217760
2017-01-01	77.7630309139540
2017-04-01	78.0423008736383
2017-07-01	78.1470866073969
2017-10-01	77.4236850612778
2018-01-01	77.9479690619014
2018-04-01	78.3388256448056