Quarter	Percent, Seasonally Adjusted
1998-01-01	36.7791370493637
1998-04-01	37.1279896341907
1998-07-01	37.4321496439030
1998-10-01	37.7190606649603
1999-01-01	37.9773788502736
1999-04-01	38.1197382663401
1999-07-01	38.3990751915828
1999-10-01	38.6254529932110
2000-01-01	38.7768966493174
2000-04-01	39.3172676303133
2000-07-01	39.7789920567231
2000-10-01	40.3283831432526
2001-01-01	40.7363072056023
2001-04-01	40.8970319783695
2001-07-01	41.2852198646625
2001-10-01	41.4790013627230
2002-01-01	41.8674271385766
2002-04-01	41.8529800924495
2002-07-01	42.1996826631002
2002-10-01	42.1835176262319
2003-01-01	42.4323356596281
2003-04-01	42.7468454130135
2003-07-01	42.9496473769249
2003-10-01	42.5797592233599
2004-01-01	45.2643569378295
2004-04-01	45.3085843160702
2004-07-01	45.4684897284016
2004-10-01	45.7875873679040
2005-01-01	45.5045021598240
2005-04-01	45.3570384076366
2005-07-01	45.0213152530437
2005-10-01	45.5888722956705
2006-01-01	46.1708796674997
2006-04-01	46.4373872195227
2006-07-01	46.2568196582770
2006-10-01	46.5210521953787
2007-01-01	46.2371736025871
2007-04-01	46.4795221611641
2007-07-01	46.9820766469901
2007-10-01	46.8510338590800
2008-01-01	47.2300229042721
2008-04-01	47.2672041187631
2008-07-01	47.3706844000470
2008-10-01	47.0496795101190
2009-01-01	46.6035284332454
2009-04-01	46.5815228869825
2009-07-01	46.2564436703699
2009-10-01	46.0173605705254
2010-01-01	45.9555555346874
2010-04-01	46.1591001008071
2010-07-01	46.1102642865734
2010-10-01	46.3058726439532
2011-01-01	46.5686561391628
2011-04-01	46.3983391908221
2011-07-01	46.3536947886016
2011-10-01	46.6720865522813
2012-01-01	47.0151307468688
2012-04-01	47.2159448813012
2012-07-01	47.0804350680744
2012-10-01	46.9844951964985
2013-01-01	46.6796864077360
2013-04-01	46.3998059777288
2013-07-01	46.4079340815373
2013-10-01	46.5873592626625
2014-01-01	46.7286323235208
2014-04-01	46.5703867053887
2014-07-01	46.8986004560839
2014-10-01	47.0796395745325
2015-01-01	47.0971228643516
2015-04-01	47.0490189463311
2015-07-01	47.1451471136017
2015-10-01	47.3831518733961
2016-01-01	47.6470855922351
2016-04-01	48.1254318819285
2016-07-01	48.2465556613006
2016-10-01	48.2776490133246
2017-01-01	48.6403185322642
2017-04-01	48.7490271477682
2017-07-01	49.0518520654462
2017-10-01	49.2202323243971
2018-01-01	49.2809929159344
2018-04-01	49.7631641654995