Quarter	Percent, Seasonally Adjusted
1998-01-01	47.5816410950298
1998-04-01	47.7942313836432
1998-07-01	47.8840887831715
1998-10-01	48.0307901009594
1999-01-01	48.0241327239897
1999-04-01	48.1088077869517
1999-07-01	48.1401114497569
1999-10-01	48.0502065180950
2000-01-01	48.0866558561971
2000-04-01	48.2541566328626
2000-07-01	48.4266519544199
2000-10-01	48.5765785974547
2001-01-01	48.5948660870492
2001-04-01	48.4183437500203
2001-07-01	48.6403584940117
2001-10-01	48.5995895002921
2002-01-01	48.7437124268179
2002-04-01	48.8196635376481
2002-07-01	48.9304569042470
2002-10-01	48.9002969372492
2003-01-01	49.0620826215987
2003-04-01	49.2361080588421
2003-07-01	49.2798806436810
2003-10-01	49.0330718770440
2004-01-01	49.6533885436210
2004-04-01	49.5997061026872
2004-07-01	49.5160467618524
2004-10-01	49.5623429321622
2005-01-01	49.3254028766539
2005-04-01	49.1019762194031
2005-07-01	48.8747393734534
2005-10-01	49.1410561638028
2006-01-01	49.2772596419112
2006-04-01	49.2098034638830
2006-07-01	48.9003413835787
2006-10-01	48.9207973310727
2007-01-01	48.4880252781390
2007-04-01	48.5781350210479
2007-07-01	48.9750167028290
2007-10-01	48.9668711423888
2008-01-01	49.1459734829271
2008-04-01	49.3156765215173
2008-07-01	49.1274179751512
2008-10-01	48.8180656852177
2009-01-01	48.6566788660763
2009-04-01	48.4903087022325
2009-07-01	48.4357677820195
2009-10-01	48.3273259667302
2010-01-01	48.3576995478683
2010-04-01	48.3136374756389
2010-07-01	47.9951910367696
2010-10-01	48.1541104496196
2011-01-01	48.0961381193210
2011-04-01	47.9454927567291
2011-07-01	48.1108745425463
2011-10-01	48.4203537578499
2012-01-01	48.8913256259812
2012-04-01	49.1967504570884
2012-07-01	49.1259790186729
2012-10-01	49.1194302359726
2013-01-01	48.9703519896005
2013-04-01	48.7484540440819
2013-07-01	48.7109128605826
2013-10-01	48.7435117042215
2014-01-01	48.9729711204626
2014-04-01	48.8370238658581
2014-07-01	49.1439605493833
2014-10-01	49.2799227081111
2015-01-01	48.9633680982140
2015-04-01	49.0231672764433
2015-07-01	48.9057086292335
2015-10-01	48.9817700872955
2016-01-01	49.1045828982220
2016-04-01	49.6103886324469
2016-07-01	49.5760595591492
2016-10-01	49.7160951077016
2017-01-01	49.8326090417645
2017-04-01	49.6269794271798
2017-07-01	49.9499818505327
2017-10-01	49.8491838199364
2018-01-01	49.9380745489576
2018-04-01	50.2819038385064