Quarter	Percent, Seasonally Adjusted
1998-01-01	38.9953112718238
1998-04-01	39.2681849507975
1998-07-01	38.3089263396957
1998-10-01	39.0513235158542
1999-01-01	39.4087120223859
1999-04-01	40.4185145629926
1999-07-01	38.8214930123747
1999-10-01	40.4043671874096
2000-01-01	41.8238100339543
2000-04-01	41.7623033674173
2000-07-01	43.6584922918833
2000-10-01	44.5051049249582
2001-01-01	45.6478697569979
2001-04-01	45.8605208496187
2001-07-01	47.2296633517919
2001-10-01	47.5222027175789
2002-01-01	47.1913850643008
2002-04-01	48.0586764484085
2002-07-01	48.9251637140309
2002-10-01	49.6769719878341
2003-01-01	49.3419755985338
2003-04-01	50.6343993252709
2003-07-01	53.0093660299096
2003-10-01	51.1737451878074
2004-01-01	51.5988733565567
2004-04-01	51.8968432434636
2004-07-01	51.0688434576765
2004-10-01	51.1703923255009
2005-01-01	51.9038143451028
2005-04-01	52.4121287072956
2005-07-01	53.4684288255424
2005-10-01	53.4114341748992
2006-01-01	53.8580845415479
2006-04-01	54.8360103145536
2006-07-01	54.8127289149729
2006-10-01	55.7019020066990
2007-01-01	54.5972054910509
2007-04-01	55.3523451914878
2007-07-01	55.5067294318058
2007-10-01	54.9054178798356
2008-01-01	56.2969810969681
2008-04-01	57.6066154294079
2008-07-01	57.3086044977911
2008-10-01	57.1531317403000
2009-01-01	55.3931399509545
2009-04-01	55.0981438062096
2009-07-01	54.5975118780876
2009-10-01	53.3626130450179
2010-01-01	55.0431067877504
2010-04-01	55.5956897752734
2010-07-01	55.6747885658777
2010-10-01	56.1501212360233
2011-01-01	55.9638333753719
2011-04-01	57.4045333715871
2011-07-01	56.5548839090712
2011-10-01	57.1117426636057
2012-01-01	56.0088474020801
2012-04-01	57.5243686531723
2012-07-01	55.9571753765053
2012-10-01	56.9563327585429
2013-01-01	55.8247719950254
2013-04-01	56.9022247754856
2013-07-01	57.2644994159359
2013-10-01	55.9770109096745
2014-01-01	56.7927627997204
2014-04-01	56.1673438159822
2014-07-01	56.6243989231757
2014-10-01	57.5468113611021
2015-01-01	57.1825111309176
2015-04-01	56.6336032201172
2015-07-01	57.5494496910147
2015-10-01	58.2364689343055
2016-01-01	58.1093741235246
2016-04-01	59.8559515682954
2016-07-01	61.1112068638351
2016-10-01	60.1280565446853
2017-01-01	60.0853131960189
2017-04-01	61.3660106878898
2017-07-01	61.7889981131909
2017-10-01	63.3783149262023
2018-01-01	63.8478922971034
2018-04-01	63.9638014183584