Quarter	Percent, Seasonally Adjusted
1998-01-01	48.5055827311539
1998-04-01	48.7335921458110
1998-07-01	49.3131688280205
1998-10-01	49.6406995061582
1999-01-01	50.4271957617607
1999-04-01	50.2096707656116
1999-07-01	50.1001633323237
1999-10-01	50.4891701473616
2000-01-01	50.1699316871104
2000-04-01	50.3816345602946
2000-07-01	50.7093376197140
2000-10-01	50.7351413849871
2001-01-01	50.2248491976404
2001-04-01	49.6012091465283
2001-07-01	49.7072735201512
2001-10-01	49.6211067229376
2002-01-01	50.3840452344449
2002-04-01	50.9948049729686
2002-07-01	51.5112710555710
2002-10-01	51.8173229423845
2003-01-01	51.8437655361410
2003-04-01	52.0404509834908
2003-07-01	52.4712604152686
2003-10-01	52.8168109654939
2004-01-01	53.8825490705698
2004-04-01	54.1030944786734
2004-07-01	54.2010962494448
2004-10-01	54.4359410652848
2005-01-01	54.0921110309263
2005-04-01	54.4369833197505
2005-07-01	54.5471385906018
2005-10-01	54.8029159050674
2006-01-01	54.8492938707250
2006-04-01	54.8187829061949
2006-07-01	55.1749950415363
2006-10-01	54.9880204654359
2007-01-01	54.9289682302259
2007-04-01	54.8839885324570
2007-07-01	54.7439390649759
2007-10-01	54.8062840016242
2008-01-01	54.7403031742695
2008-04-01	54.9052813830355
2008-07-01	54.9571436823145
2008-10-01	55.4447494814026
2009-01-01	56.0836514853257
2009-04-01	56.2793511370342
2009-07-01	56.7244149853446
2009-10-01	56.8375526557299
2010-01-01	57.2385786154144
2010-04-01	57.4883717966887
2010-07-01	57.5945803663276
2010-10-01	57.6936891590957
2011-01-01	57.4935600769136
2011-04-01	57.1764601453748
2011-07-01	57.2627961227681
2011-10-01	57.9428540476704
2012-01-01	57.9878920239859
2012-04-01	58.1479924156941
2012-07-01	58.4957495788555
2012-10-01	58.5076728869256
2013-01-01	58.0679531041867
2013-04-01	58.5840973254346
2013-07-01	58.4766989811778
2013-10-01	58.1160419637763
2014-01-01	58.8122875408362
2014-04-01	59.0155155762354
2014-07-01	59.0455042720954
2014-10-01	59.1629132874050
2015-01-01	59.4468833064440
2015-04-01	59.8239010892285
2015-07-01	60.1108235149118
2015-10-01	60.2895014190020
2016-01-01	60.4070950605951
2016-04-01	60.3533137051544
2016-07-01	60.7141892409988
2016-10-01	60.3213731205654
2017-01-01	60.3333062103500
2017-04-01	60.5212945216730
2017-07-01	60.0760598699865
2017-10-01	60.0787972091388
2018-01-01	59.7658768623502
2018-04-01	60.0986804894022