Quarter	Percent, Seasonally Adjusted
1999-01-01	34.6766778761659
1999-04-01	33.4301440036950
1999-07-01	31.9230898599184
1999-10-01	31.6586406584390
2000-01-01	30.5037612435825
2000-04-01	29.0901463876430
2000-07-01	29.8769179669910
2000-10-01	29.7951412538342
2001-01-01	28.4785053760445
2001-04-01	28.9254122979662
2001-07-01	29.5377247754622
2001-10-01	28.5209084969692
2002-01-01	28.3647655648967
2002-04-01	28.7528473847578
2002-07-01	28.5111392030379
2002-10-01	29.3047918604492
2003-01-01	29.5784474338835
2003-04-01	29.2821832580052
2003-07-01	29.3570371270862
2003-10-01	28.8874561881613
2004-01-01	28.0498350178721
2004-04-01	28.1718811312439
2004-07-01	28.1222619497865
2004-10-01	27.5342332747666
2005-01-01	27.9072698626967
2005-04-01	28.4595743070909
2005-07-01	27.7098330032741
2005-10-01	28.3630981799527
2006-01-01	28.8639159778184
2006-04-01	29.5832232574848
2006-07-01	29.0937258372108
2006-10-01	29.1812872578800
2007-01-01	30.0710985496903
2007-04-01	30.3669231267386
2007-07-01	30.8676647924993
2007-10-01	32.3729651323942
2008-01-01	32.1015502444902
2008-04-01	30.3297411843969
2008-07-01	30.6700045826383
2008-10-01	30.1725152055462
2009-01-01	28.6346683849648
2009-04-01	26.5353006825439
2009-07-01	26.7168008250569
2009-10-01	25.3410684368878
2010-01-01	23.3359295191377
2010-04-01	23.8765818456771
2010-07-01	23.7819509512592
2010-10-01	24.1851473021680
2011-01-01	24.5063977991559
2011-04-01	25.9071320302600
2011-07-01	24.4638352779795
2011-10-01	24.4295553676497
2012-01-01	24.3519158081806
2012-04-01	24.0253499303214
2012-07-01	24.5337483889313
2012-10-01	23.5277585824319
2013-01-01	23.9554299756933
2013-04-01	24.8085906115007
2013-07-01	24.8887662584689
2013-10-01	24.1006856986473
2014-01-01	26.0931742417581
2014-04-01	27.0696957135741
2014-07-01	26.6220968320034
2014-10-01	27.5762688825285
2015-01-01	28.5704312943122
2015-04-01	27.5890348966497
2015-07-01	28.2724209653539
2015-10-01	29.1535502838268
2016-01-01	30.1735629164030
2016-04-01	31.3788720812233
2016-07-01	32.6852145800853
2016-10-01	33.3849657962470
2017-01-01	33.5462416873308
2017-04-01	32.2472268714742
2017-07-01	31.5743302762966
2017-10-01	32.1685126737886
2018-01-01	32.4964980281478
2018-04-01	34.5639057299463