Quarter	Percent, Seasonally Adjusted
1999-01-01	83.6891878081238
1999-04-01	84.3981611435165
1999-07-01	84.8273683417135
1999-10-01	84.9918309374442
2000-01-01	85.5126732371703
2000-04-01	85.6874086262038
2000-07-01	85.8244621578127
2000-10-01	85.9224442589947
2001-01-01	85.6900174884506
2001-04-01	86.0369606897839
2001-07-01	85.9664999855821
2001-10-01	85.9333590452719
2002-01-01	85.5645284201652
2002-04-01	85.7294311779490
2002-07-01	85.5546314531406
2002-10-01	85.4516067336833
2003-01-01	85.6723867682644
2003-04-01	85.8559283613238
2003-07-01	85.9013456879259
2003-10-01	85.8299979083469
2004-01-01	85.6035449617366
2004-04-01	85.8582022460809
2004-07-01	85.7826508042864
2004-10-01	86.3844829245436
2005-01-01	86.3121083054583
2005-04-01	86.6590884920402
2005-07-01	87.0393249960950
2005-10-01	87.1783081294173
2006-01-01	87.4909106615238
2006-04-01	87.4051318559252
2006-07-01	87.4610620265360
2006-10-01	87.5518847554520
2007-01-01	87.5376983308870
2007-04-01	87.8416847339612
2007-07-01	87.4662801254422
2007-10-01	87.0629476206742
2008-01-01	86.5459935761304
2008-04-01	85.3071550560651
2008-07-01	83.5989423296554
2008-10-01	81.4703631370361
2009-01-01	78.6705194148233
2009-04-01	77.4477544295612
2009-07-01	76.6156905124997
2009-10-01	76.4315890894848
2010-01-01	76.0208176705091
2010-04-01	75.9181467312950
2010-07-01	75.8308947375037
2010-10-01	75.6912213751591
2011-01-01	75.4623579589659
2011-04-01	74.9855416400937
2011-07-01	74.2964891059182
2011-10-01	73.6070782336726
2012-01-01	72.5661291877894
2012-04-01	71.3218109371390
2012-07-01	70.7339179135176
2012-10-01	70.5098495773856
2013-01-01	70.3345893058620
2013-04-01	70.1727593060332
2013-07-01	70.1924973472457
2013-10-01	71.0520379219622
2014-01-01	71.1982996518648
2014-04-01	72.1622855954306
2014-07-01	72.9966407982896
2014-10-01	73.5452083157592
2015-01-01	73.9208441366359
2015-04-01	74.8958987498095
2015-07-01	75.3992908990406
2015-10-01	76.0432520174339
2016-01-01	76.7197150879179
2016-04-01	76.9919514173242
2016-07-01	77.5766564818401
2016-10-01	78.1668889323116
2017-01-01	78.4531683726722
2017-04-01	79.1103644406189
2017-07-01	79.4867756521459
2017-10-01	79.8110277093934
2018-01-01	79.8381802334971
2018-04-01	80.7312239643769
2018-07-01	80.9191731894484