Quarter	Percent, Seasonally Adjusted
1998-01-01	51.8913782527591
1998-04-01	51.9544974384750
1998-07-01	52.3072296539775
1998-10-01	52.3977008484164
1999-01-01	52.6066605641680
1999-04-01	52.2506896501169
1999-07-01	52.1089810404638
1999-10-01	52.3377185155781
2000-01-01	52.0451644236530
2000-04-01	52.1572033812118
2000-07-01	52.2702196059541
2000-10-01	52.2145571947288
2001-01-01	51.7818686936262
2001-04-01	51.4210280343821
2001-07-01	51.3605140492448
2001-10-01	51.2259346490910
2002-01-01	51.3591192171643
2002-04-01	51.7164874610693
2002-07-01	51.9364741814482
2002-10-01	52.0938258053438
2003-01-01	52.1964540021699
2003-04-01	52.1609632201046
2003-07-01	52.2830855130534
2003-10-01	52.3925070863876
2004-01-01	52.7982625536755
2004-04-01	52.9299295411099
2004-07-01	52.8369406962279
2004-10-01	52.9276289646751
2005-01-01	52.7858650932616
2005-04-01	52.8827760504992
2005-07-01	52.9053075618244
2005-10-01	53.0305925094821
2006-01-01	53.1101129080236
2006-04-01	53.0042146370560
2006-07-01	53.1411824147899
2006-10-01	53.0613039896597
2007-01-01	52.9499034337802
2007-04-01	52.8941258695238
2007-07-01	52.9550512982753
2007-10-01	52.9413488856836
2008-01-01	52.9443287466242
2008-04-01	52.9864396415276
2008-07-01	52.9077123296339
2008-10-01	53.0632495503973
2009-01-01	53.3059504860410
2009-04-01	53.3782420327823
2009-07-01	53.5768110636093
2009-10-01	53.5287622049331
2010-01-01	53.6628409692725
2010-04-01	53.5491661678493
2010-07-01	53.4407621230634
2010-10-01	53.3643136654898
2011-01-01	53.0267044866829
2011-04-01	52.6795057896856
2011-07-01	52.4648807507443
2011-10-01	52.4883218873764
2012-01-01	52.3940016708808
2012-04-01	52.3029710910866
2012-07-01	52.2914753396268
2012-10-01	52.3296672603363
2013-01-01	52.0207016518857
2013-04-01	52.2026402692781
2013-07-01	52.0595703896725
2013-10-01	51.8275101070944
2014-01-01	52.0184481181274
2014-04-01	51.8887027236043
2014-07-01	51.7642058296593
2014-10-01	51.6364216999353
2015-01-01	51.7334158262008
2015-04-01	51.9422358512768
2015-07-01	52.0929270296950
2015-10-01	52.2101936392213
2016-01-01	52.1962567560238
2016-04-01	52.1697389795823
2016-07-01	52.2503499575383
2016-10-01	51.9833457026540
2017-01-01	52.0990810055326
2017-04-01	52.2121570466039
2017-07-01	52.0752891423337
2017-10-01	51.9501609213198
2018-01-01	51.8385361273186
2018-04-01	51.9238246875838