Quarter	Percent, Seasonally Adjusted
1999-01-01	84.0470187777086
1999-04-01	84.1803287017554
1999-07-01	84.0558134445236
1999-10-01	83.4663509347009
2000-01-01	83.9431061349683
2000-04-01	84.2181012986260
2000-07-01	84.0803931477773
2000-10-01	84.3601754371396
2001-01-01	84.2062459917555
2001-04-01	84.3398109441587
2001-07-01	84.6967678759682
2001-10-01	84.3080411354056
2002-01-01	84.4470925069346
2002-04-01	84.6096391111812
2002-07-01	83.4861340408601
2002-10-01	83.7663150698241
2003-01-01	83.8281530741543
2003-04-01	83.3464712225812
2003-07-01	83.4394534202336
2003-10-01	83.3515051035815
2004-01-01	83.0856703134803
2004-04-01	83.9516618574005
2004-07-01	83.9828264364946
2004-10-01	83.8770164335751
2005-01-01	83.8512623984378
2005-04-01	84.0224066323371
2005-07-01	84.7346213672679
2005-10-01	85.5188101821785
2006-01-01	86.1670462193302
2006-04-01	85.6121030771370
2006-07-01	86.1596177730468
2006-10-01	86.3798518519876
2007-01-01	85.9640541054365
2007-04-01	85.8491887439206
2007-07-01	85.8211298036277
2007-10-01	86.7106552090145
2008-01-01	87.2282591212484
2008-04-01	87.2493021022933
2008-07-01	87.8712435773805
2008-10-01	87.6027427984348
2009-01-01	86.1952185660162
2009-04-01	84.8829150593996
2009-07-01	84.6065514994415
2009-10-01	83.1329697617165
2010-01-01	82.8962242111468
2010-04-01	82.6463167054004
2010-07-01	83.0673279581084
2010-10-01	82.6711836543465
2011-01-01	81.9338387523194
2011-04-01	82.3776712796419
2011-07-01	82.7718927875461
2011-10-01	82.2120122072638
2012-01-01	82.2228427787017
2012-04-01	81.7718040886801
2012-07-01	81.8537260434634
2012-10-01	81.6609117910437
2013-01-01	81.8937057788211
2013-04-01	82.3927370973839
2013-07-01	81.9737104756662
2013-10-01	81.7958731020232
2014-01-01	81.2628346966297
2014-04-01	82.2357284681202
2014-07-01	82.2063650159917
2014-10-01	82.1152521754879
2015-01-01	82.0430226328237
2015-04-01	81.5763722297912
2015-07-01	82.3514047946100
2015-10-01	82.5916283544194
2016-01-01	83.1315950138312
2016-04-01	82.5024551805991
2016-07-01	82.3197425380195
2016-10-01	82.1063071533771
2017-01-01	81.5884291858888
2017-04-01	81.2444629118106
2017-07-01	81.9935528085394
2017-10-01	81.8946929570000
2018-01-01	82.6615603174684
2018-04-01	82.5819873283953