Quarter	Percent, Seasonally Adjusted
2005-01-01	50.9612216276380
2005-04-01	50.8348370930877
2005-07-01	51.1157481511560
2005-10-01	51.4109381589960
2006-01-01	51.8694478926295
2006-04-01	52.3713260947873
2006-07-01	52.6745873542641
2006-10-01	52.9289675307703
2007-01-01	53.2857159119873
2007-04-01	53.6128799856848
2007-07-01	53.8643361241856
2007-10-01	54.0807598628358
2008-01-01	54.2886836316547
2008-04-01	54.1793860638058
2008-07-01	54.6654599774876
2008-10-01	55.0294655387764
2009-01-01	54.7394586163714
2009-04-01	55.1304289700797
2009-07-01	54.9559080056200
2009-10-01	56.0883365613717
2010-01-01	55.6354836204631
2010-04-01	56.0076441084953
2010-07-01	56.4048185982066
2010-10-01	56.7708513209570
2011-01-01	57.3586803815366
2011-04-01	57.9860092690810
2011-07-01	58.1753831722610
2011-10-01	58.4635278534925
2012-01-01	58.2011118332257
2012-04-01	58.3637518262164
2012-07-01	58.6065626399488
2012-10-01	58.8094663614322
2013-01-01	59.2176353465653
2013-04-01	59.4300262748291
2013-07-01	59.7019027219753
2013-10-01	59.7518975094418
2014-01-01	59.9663427744890
2014-04-01	60.1852034037784
2014-07-01	60.3441568624143
2014-10-01	60.4275293186458
2015-01-01	60.4630584923311
2015-04-01	60.6719240999658
2015-07-01	60.8523436885554
2015-10-01	60.9633073026813
2016-01-01	61.5172785555832
2016-04-01	61.7179296534390
2016-07-01	62.3281388811421
2016-10-01	62.5170657542136
2017-01-01	62.1695278380561
2017-04-01	62.6591427064020
2017-07-01	62.9076753988398
2017-10-01	63.1465591762608
2018-01-01	62.6177370882892
2018-04-01	62.7784618479498