Quarter	Percent, Seasonally Adjusted
1999-04-01	63.3871881611177
1999-07-01	63.6687859264720
1999-10-01	63.8073498316077
2000-01-01	63.7625395050958
2000-04-01	63.9696109752383
2000-07-01	64.1894212092718
2000-10-01	64.0008408731165
2001-01-01	64.1951303582200
2001-04-01	64.2215855993299
2001-07-01	64.1718725595287
2001-10-01	64.2235657173845
2002-01-01	64.1512756165878
2002-04-01	64.2232482828151
2002-07-01	64.2576993895846
2002-10-01	64.3753563078940
2003-01-01	64.3493382250563
2003-04-01	64.4527616246615
2003-07-01	64.4660638815018
2003-10-01	64.4888975276611
2004-01-01	64.7276046031636
2004-04-01	64.6619953047053
2004-07-01	64.5739845223059
2004-10-01	64.7081819975517
2005-01-01	64.9490099424446
2005-04-01	64.7360253561727
2005-07-01	64.8894978565918
2005-10-01	64.7256101126630
2006-01-01	64.8386615764807
2006-04-01	64.8698870228794
2006-07-01	64.9605790015795
2006-10-01	64.8543264959619
2007-01-01	64.5839271246144
2007-04-01	64.7043067899358
2007-07-01	64.8099969890011
2007-10-01	65.0481412176771
2008-01-01	65.0763498178101
2008-04-01	65.0794802378975
2008-07-01	64.6535540252246
2008-10-01	64.4540777202670
2009-01-01	63.9677957361313
2009-04-01	63.2116874617768
2009-07-01	63.1213229455785
2009-10-01	63.0476292530715
2010-01-01	62.7011987029625
2010-04-01	62.9670746852277
2010-07-01	63.2369388203768
2010-10-01	62.9530210280188
2011-01-01	63.0046389133186
2011-04-01	62.9102898775365
2011-07-01	62.6343476295724
2011-10-01	62.6051093691654
2012-01-01	62.6926091503107
2012-04-01	63.0437692994655
2012-07-01	63.2374244578610
2012-10-01	63.3820330117086
2013-01-01	63.2773312784114
2013-04-01	63.3700171088357
2013-07-01	63.6736078422836
2013-10-01	63.8947996615679
2014-01-01	64.2356308835835
2014-04-01	64.5840724572616
2014-07-01	64.7592082880334
2014-10-01	64.8707181254584
2015-01-01	65.1513759112852
2015-04-01	65.0120405722689
2015-07-01	65.2485832349119
2015-10-01	65.6426855368158
2016-01-01	65.6959705444682
2016-04-01	65.8632756882691
2016-07-01	65.8531355747140
2016-10-01	65.9489589274886
2017-01-01	66.1134171856767
2017-04-01	66.3442865692205
2017-07-01	66.1911689229832
2017-10-01	66.3739276641549
2018-01-01	66.6537497839421
2018-04-01	66.6834388627076