Quarter	Percent, Seasonally Adjusted
2006-01-01	73.0712504962641
2006-04-01	73.1740626301159
2006-07-01	73.3434876523789
2006-10-01	73.6760452650022
2007-01-01	73.2057938026305
2007-04-01	73.4678755375322
2007-07-01	73.6645269539363
2007-10-01	73.2606748526447
2008-01-01	73.4870894021501
2008-04-01	73.7713788257451
2008-07-01	73.8254220712869
2008-10-01	74.1940888783667
2009-01-01	73.5890385615363
2009-04-01	73.6514407625566
2009-07-01	74.3956497142127
2009-10-01	74.4422928149549
2010-01-01	74.7157589999015
2010-04-01	74.6937419307719
2010-07-01	74.3466453984991
2010-10-01	74.4104103395736
2011-01-01	75.6611103163440
2011-04-01	75.6052185170621
2011-07-01	75.7747731134582
2011-10-01	75.4688422844062
2012-01-01	74.2530752984802
2012-04-01	74.8142693314589
2012-07-01	74.9391970302176
2012-10-01	76.0558006751395
2013-01-01	75.4101094388200
2013-04-01	75.7333553824899
2013-07-01	75.6536487570341
2013-10-01	75.5633703946957
2014-01-01	76.3961046927202
2014-04-01	76.6861984080408
2014-07-01	76.4856991457470
2014-10-01	76.6424248989617
2015-01-01	76.8744405537776
2015-04-01	76.8065612418044
2015-07-01	77.3029180198893
2015-10-01	77.1188281342412
2016-01-01	77.3887248927501
2016-04-01	77.7538217495496
2016-07-01	77.3210508230405
2016-10-01	77.8392188806617
2017-01-01	78.1868811786789
2017-04-01	77.9559688280963
2017-07-01	78.3798989103522
2017-10-01	78.2580136151632
2018-01-01	78.0956578464288
2018-04-01	78.0684551953042