Quarter	Percent, Seasonally Adjusted
1998-01-01	44.6243463236114
1998-04-01	43.9780268670420
1998-07-01	43.6829266456659
1998-10-01	44.2479187194538
1999-01-01	43.4644537070067
1999-04-01	43.0176556117688
1999-07-01	42.6499422334420
1999-10-01	41.5923700035295
2000-01-01	41.5714625965665
2000-04-01	41.0034912713935
2000-07-01	40.7528519190818
2000-10-01	41.0369299890801
2001-01-01	41.8030220597202
2001-04-01	42.4617755910417
2001-07-01	42.2248358136607
2001-10-01	42.1871204025807
2002-01-01	41.9304440906044
2002-04-01	42.5322883563747
2002-07-01	41.7442374620908
2002-10-01	43.5614296064069
2003-01-01	42.6980126498188
2003-04-01	42.2745086053169
2003-07-01	40.6137101941445
2003-10-01	40.0024673211087
2004-01-01	39.3396074094406
2004-04-01	38.9219405478704
2004-07-01	39.1954345906501
2004-10-01	38.4426859706737
2005-01-01	38.2124838687254
2005-04-01	38.0712702494180
2005-07-01	38.5239158847657
2005-10-01	37.5931569516889
2006-01-01	37.3053496944734
2006-04-01	37.3924503865492
2006-07-01	38.0819356917087
2006-10-01	37.8093567910338
2007-01-01	37.8312189854418
2007-04-01	37.8615905068119
2007-07-01	37.3417773525570
2007-10-01	38.3026276312477
2008-01-01	37.3612311426999
2008-04-01	37.9718670828273
2008-07-01	38.7855672176840
2008-10-01	38.2003276082766
2009-01-01	38.3626377188031
2009-04-01	37.2853806611311
2009-07-01	36.8872854333403
2009-10-01	36.3514928122799
2010-01-01	35.3298395318019
2010-04-01	34.5932920864327
2010-07-01	33.3217608988764
2010-10-01	33.6191503760841
2011-01-01	35.7155952266952
2011-04-01	35.3307311201334
2011-07-01	36.5310338877800
2011-10-01	35.8898980550062
2012-01-01	34.6020652239856
2012-04-01	35.5369764661900
2012-07-01	35.2966926512419
2012-10-01	34.2101141335119
2013-01-01	33.4777609005827
2013-04-01	34.1150162738298
2013-07-01	33.6043036360244
2013-10-01	33.7916946582672
2014-01-01	33.9429087690183
2014-04-01	34.1045878053334
2014-07-01	34.2615217347046
2014-10-01	33.0802025964048
2015-01-01	33.5663538922719
2015-04-01	32.5609330384824
2015-07-01	33.2284568232182
2015-10-01	31.9129760391247
2016-01-01	32.3169294354930
2016-04-01	31.3472988644243
2016-07-01	30.2844601849873
2016-10-01	31.0295777102734
2017-01-01	31.3224928032579
2017-04-01	31.9887321250857
2017-07-01	33.1606189584430
2017-10-01	32.9131739940578
2018-01-01	30.6041675767684
2018-04-01	31.6502605665528