Quarter	Percent, Seasonally Adjusted
1998-01-01	15.5596270375658
1998-04-01	15.5819496601990
1998-07-01	15.7214365842652
1998-10-01	15.7810718778551
1999-01-01	15.7880124116158
1999-04-01	15.9134588805946
1999-07-01	15.8920472793370
1999-10-01	15.6983559163702
2000-01-01	15.5933813633649
2000-04-01	16.1127704427419
2000-07-01	16.1707507951586
2000-10-01	16.3611528516066
2001-01-01	16.7463061691449
2001-04-01	16.4997626294210
2001-07-01	17.0834360410067
2001-10-01	17.4262033872122
2002-01-01	17.5665327678288
2002-04-01	17.9912788384661
2002-07-01	18.3608079758426
2002-10-01	18.5576527443316
2003-01-01	18.6429619440852
2003-04-01	19.2229534706298
2003-07-01	19.5226410840974
2003-10-01	19.7695741841915
2004-01-01	19.7753755427634
2004-04-01	20.1772156171632
2004-07-01	20.9479906391843
2004-10-01	21.2350410436939
2005-01-01	21.3365225219117
2005-04-01	21.3508378945379
2005-07-01	21.2615415665945
2005-10-01	21.9584853033879
2006-01-01	22.0105332654174
2006-04-01	22.3609326044944
2006-07-01	22.7441397755832
2006-10-01	22.8153274638105
2007-01-01	23.2810723788258
2007-04-01	23.3270392936902
2007-07-01	23.4608987491909
2007-10-01	23.6985163841662
2008-01-01	23.7944706816125
2008-04-01	24.5822347748469
2008-07-01	24.9502419486204
2008-10-01	25.0739865979954
2009-01-01	25.6943073449506
2009-04-01	26.1186633160439
2009-07-01	25.9271774349226
2009-10-01	26.1704555881391
2010-01-01	26.5824752778178
2010-04-01	26.5889332561776
2010-07-01	26.9908309453746
2010-10-01	27.3924841312845
2011-01-01	27.9602720210786
2011-04-01	28.3283881854536
2011-07-01	29.0361168899831
2011-10-01	29.9936090700633
2012-01-01	31.0489459640912
2012-04-01	32.1380134637310
2012-07-01	32.4318220351951
2012-10-01	33.0534140726558
2013-01-01	33.4215467238225
2013-04-01	34.2355168395809
2013-07-01	35.1927415755620
2013-10-01	35.7817441986143
2014-01-01	37.2760244965973
2014-04-01	37.8127387176877
2014-07-01	38.6948129224592
2014-10-01	39.3433267431346
2015-01-01	39.3285198284630
2015-04-01	39.5960489041466
2015-07-01	39.5152244316895
2015-10-01	39.9916671868895
2016-01-01	40.6870803560139
2016-04-01	41.6079229853419
2016-07-01	41.9787553159691
2016-10-01	42.5856649609493
2017-01-01	43.4654711472163
2017-04-01	44.0816463828841
2017-07-01	44.8820543128199
2017-10-01	45.6844784395576
2018-01-01	45.9089896313028
2018-04-01	46.5873049222068