Quarter	Percent, Seasonally Adjusted
1999-01-01	83.6941042822965
1999-04-01	83.5421603483037
1999-07-01	83.5679132384378
1999-10-01	82.8816293868616
2000-01-01	83.9252491441499
2000-04-01	84.5241433288104
2000-07-01	84.4841677296850
2000-10-01	83.8135497993658
2001-01-01	84.0407800296606
2001-04-01	84.1079293470170
2001-07-01	84.9567089125545
2001-10-01	85.6331693790491
2002-01-01	85.6580324004447
2002-04-01	85.5844270814253
2002-07-01	85.0003635700803
2002-10-01	83.4424216157528
2003-01-01	83.8754804667553
2003-04-01	84.5483484345814
2003-07-01	84.4057578545224
2003-10-01	84.5482581836802
2004-01-01	84.9825415773863
2004-04-01	86.2653211943751
2004-07-01	86.9304387057131
2004-10-01	86.4154381645946
2005-01-01	86.6011278792434
2005-04-01	86.3813756214722
2005-07-01	85.7890658655109
2005-10-01	86.8903210299165
2006-01-01	87.4441544577554
2006-04-01	87.7617788776771
2006-07-01	86.2474938478239
2006-10-01	86.4583660963411
2007-01-01	86.8483308060352
2007-04-01	87.9535264415811
2007-07-01	86.8012478200108
2007-10-01	87.5237913240879
2008-01-01	87.7982795708222
2008-04-01	88.4541378717258
2008-07-01	88.4276053028631
2008-10-01	89.3753559984264
2009-01-01	88.3800212314739
2009-04-01	87.6948363217850
2009-07-01	87.5392934426155
2009-10-01	88.1880557212082
2010-01-01	88.2695914185476
2010-04-01	88.7259003352309
2010-07-01	87.0139028930776
2010-10-01	88.4144063435099
2011-01-01	88.5251062634699
2011-04-01	88.5179890515504
2011-07-01	87.9021519826096
2011-10-01	88.5026251337915
2012-01-01	89.4436755978973
2012-04-01	88.6863843346620
2012-07-01	89.5694517258666
2012-10-01	88.5947001204110
2013-01-01	88.7497225811324
2013-04-01	88.3372458417065
2013-07-01	88.9162643859680
2013-10-01	88.6508336614656
2014-01-01	89.4440341728069
2014-04-01	88.9551565394884
2014-07-01	87.5714647396234
2014-10-01	87.1549467579594
2015-01-01	87.9604866556035
2015-04-01	88.8929957653564
2015-07-01	89.2226125794741
2015-10-01	88.2056057981814
2016-01-01	87.9989931885854
2016-04-01	89.1622184250560
2016-07-01	88.7211897501289
2016-10-01	89.7327034337557
2017-01-01	89.6640015577642
2017-04-01	89.8599026168998
2017-07-01	90.7701743926648
2017-10-01	90.7736357954100
2018-01-01	89.7135905748927
2018-04-01	89.4761390655079