Quarter	Percent, Seasonally Adjusted
1998-01-01	38.1911535835531
1998-04-01	38.7408993101123
1998-07-01	37.8843434280853
1998-10-01	38.3130624264864
1999-01-01	38.4126941173770
1999-04-01	37.8730664219149
1999-07-01	37.9240257145349
1999-10-01	37.2580791981482
2000-01-01	36.4969185803851
2000-04-01	35.8045834090026
2000-07-01	36.1853632460333
2000-10-01	36.5144748119664
2001-01-01	36.4905285840406
2001-04-01	36.9289184608480
2001-07-01	37.7354724670891
2001-10-01	37.0847235366553
2002-01-01	36.9604961813339
2002-04-01	36.8877175909787
2002-07-01	36.0260032178295
2002-10-01	36.1368928897018
2003-01-01	35.5227062123559
2003-04-01	34.5927329560543
2003-07-01	33.9842400148244
2003-10-01	33.3247352724211
2004-01-01	32.7977498812279
2004-04-01	32.1695322136253
2004-07-01	31.8839340750178
2004-10-01	31.4217362821107
2005-01-01	30.9210527694049
2005-04-01	30.7535780445350
2005-07-01	30.7021521611070
2005-10-01	30.8415172607451
2006-01-01	30.8635484086962
2006-04-01	30.9776507463670
2006-07-01	30.7669407947228
2006-10-01	30.1087393666031
2007-01-01	30.3466186195204
2007-04-01	29.9341025663729
2007-07-01	29.9433955912081
2007-10-01	30.3774096836762
2008-01-01	30.0052842779765
2008-04-01	30.6414165957398
2008-07-01	30.6143796677378
2008-10-01	30.1465150162606
2009-01-01	30.3062194093028
2009-04-01	29.6061163322008
2009-07-01	28.7128233147610
2009-10-01	27.9945550170662
2010-01-01	27.1570989440507
2010-04-01	26.8531350308856
2010-07-01	24.9082077680953
2010-10-01	25.0792446845872
2011-01-01	25.4725323494409
2011-04-01	24.7335070444132
2011-07-01	24.5814805304184
2011-10-01	23.2119189604451
2012-01-01	22.4967368677769
2012-04-01	21.6326936355978
2012-07-01	20.5916788719481
2012-10-01	20.0650287760953
2013-01-01	19.3100743648992
2013-04-01	19.7283253066066
2013-07-01	21.2920121328622
2013-10-01	21.2706790667157
2014-01-01	21.8456803799860
2014-04-01	21.5927295617878
2014-07-01	22.0796494957254
2014-10-01	21.9434236578212
2015-01-01	21.1347544247390
2015-04-01	21.5413221067400
2015-07-01	21.8255968326296
2015-10-01	21.4845516306006
2016-01-01	22.3066141855140
2016-04-01	21.8518610924434
2016-07-01	22.0775709830409
2016-10-01	22.7624909693541
2017-01-01	23.3449781404136
2017-04-01	24.1546007942150
2017-07-01	24.2000539734430
2017-10-01	24.6453324409470
2018-01-01	24.7517815134624
2018-04-01	24.2263521674311