Quarter	Percent, Seasonally Adjusted
1999-01-01	19.0547643649760
1999-04-01	18.8993110896280
1999-07-01	20.1948110243289
1999-10-01	18.3536942480760
2000-01-01	20.3605579843357
2000-04-01	17.7173773025892
2000-07-01	20.3184690113582
2000-10-01	18.2609892270190
2001-01-01	18.9396742507278
2001-04-01	17.4137467739013
2001-07-01	20.9278571798648
2001-10-01	19.4933873567974
2002-01-01	19.9316477045761
2002-04-01	17.9472713326698
2002-07-01	21.2108791755716
2002-10-01	19.6696495835416
2003-01-01	19.1689758254958
2003-04-01	17.9334732018901
2003-07-01	21.0061657197374
2003-10-01	19.3390485795932
2004-01-01	20.1400021374372
2004-04-01	18.2842307781461
2004-07-01	20.9936690555002
2004-10-01	18.9141268928503
2005-01-01	21.3339116469630
2005-04-01	18.7649462543652
2005-07-01	22.1550165242876
2005-10-01	19.5506807633596
2006-01-01	17.4456829197437
2006-04-01	16.8026863146020
2006-07-01	19.1883503484355
2006-10-01	18.9226802947685
2007-01-01	16.9746675422022
2007-04-01	16.1957323822408
2007-07-01	18.8288866201064
2007-10-01	20.0484532084614
2008-01-01	20.4679943278455
2008-04-01	19.1634593931281
2008-07-01	21.2036132309227
2008-10-01	25.8453353284702
2009-01-01	27.0161589011524
2009-04-01	26.8468325881375
2009-07-01	26.7876108734966
2009-10-01	26.8444197762787
2010-01-01	24.3956461207442
2010-04-01	22.2177426422900
2010-07-01	24.7282888999334
2010-10-01	25.6965094873973
2011-01-01	21.2351587506059
2011-04-01	20.6981026089127
2011-07-01	22.1606155133208
2011-10-01	24.9574544182555
2012-01-01	23.7341335404829
2012-04-01	24.0238057900394
2012-07-01	24.1705147939114
2012-10-01	26.3463258579982
2013-01-01	23.6087136572185
2013-04-01	24.0596583767910
2013-07-01	24.4225775019551
2013-10-01	26.2510914482764
2014-01-01	23.4973369826928
2014-04-01	22.7426493963824
2014-07-01	24.1159933053236
2014-10-01	26.0276206364537
2015-01-01	26.6386661575665
2015-04-01	25.9737146966005
2015-07-01	27.7374909354605
2015-10-01	29.5262654410847
2016-01-01	26.7039437454992
2016-04-01	25.6012888871840
2016-07-01	28.6306149149586
2016-10-01	28.6869555025980
2017-01-01	25.4558944121207
2017-04-01	25.2876073976991
2017-07-01	27.2323067509688
2017-10-01	27.8111169454655
2018-01-01	25.9587133208685
2018-04-01	25.0142411955903