Quarter	Percent, Seasonally Adjusted
1999-01-01	22.8800668927653
1999-04-01	23.4114175621576
1999-07-01	23.1337681222700
1999-10-01	23.0883940980657
2000-01-01	23.2064906133659
2000-04-01	23.2892097698644
2000-07-01	23.2229694324359
2000-10-01	23.2493522157046
2001-01-01	22.9045989225777
2001-04-01	22.3655682319538
2001-07-01	22.5754991547246
2001-10-01	22.6550261355015
2002-01-01	23.0067447308219
2002-04-01	23.5212242079757
2002-07-01	23.4674350429125
2002-10-01	23.1657343571648
2003-01-01	23.3441754077939
2003-04-01	23.1750719785574
2003-07-01	23.1299665649289
2003-10-01	23.5093552155644
2004-01-01	23.5251726685178
2004-04-01	23.2720721122369
2004-07-01	23.4427758838938
2004-10-01	23.5769679932636
2005-01-01	23.6408830591726
2005-04-01	23.6392239637575
2005-07-01	23.6059631468140
2005-10-01	23.2100945576081
2006-01-01	23.1440376814528
2006-04-01	23.3780295161443
2006-07-01	23.7359587144995
2006-10-01	24.1082291121074
2007-01-01	24.2383172426831
2007-04-01	24.2811320174506
2007-07-01	23.8974724925563
2007-10-01	23.8278720980575
2008-01-01	23.7340403226693
2008-04-01	23.6427377311820
2008-07-01	23.5878544788389
2008-10-01	23.5514546728398
2009-01-01	23.6666534213762
2009-04-01	23.7797162674914
2009-07-01	23.6637020603678
2009-10-01	23.7531997962316
2010-01-01	24.1028134725835
2010-04-01	23.8834113192247
2010-07-01	23.9715662508700
2010-10-01	23.8276828203737
2011-01-01	23.7726780437208
2011-04-01	23.3018173163913
2011-07-01	23.4422535395028
2011-10-01	23.1860705513102
2012-01-01	22.8797349644162
2012-04-01	22.9770161406905
2012-07-01	22.7986432725391
2012-10-01	22.7897321082133
2013-01-01	22.4447124169943
2013-04-01	22.6779688608348
2013-07-01	22.9241068119037
2013-10-01	23.1117183272333
2014-01-01	22.6746385912019
2014-04-01	22.5016937108494
2014-07-01	22.2401910401887
2014-10-01	22.1135084616635
2015-01-01	22.4541340408488
2015-04-01	22.7103087239071
2015-07-01	22.5078502907974
2015-10-01	22.3273203451069
2016-01-01	22.1763494711197
2016-04-01	21.6716691450106
2016-07-01	21.6227431615302
2016-10-01	21.4829065112166
2017-01-01	21.5888033867514
2017-04-01	21.7375966122028
2017-07-01	21.8005151364477
2017-10-01	21.9632960068002
2018-01-01	21.5563991456530
2018-04-01	21.4715419244771