Quarter	Percent, Seasonally Adjusted
1998-04-01	33.4005918751681
1999-04-01	33.5933368588049
2000-04-01	34.9335398115886
2001-04-01	31.7627842693806
2002-04-01	34.0970350404313
2003-04-01	32.5719724006662
2004-04-01	32.6001389210465
2005-04-01	32.3562698053418
2006-04-01	32.2437673130194
2007-04-01	30.6900328587076
2008-04-01	29.7886178861789
2009-04-01	29.8322941302946
2010-01-01	31.3792078652376
2010-04-01	31.2317981139306
2010-07-01	31.8069199162474
2010-10-01	31.1488485847405
2011-01-01	30.3064682834215
2011-04-01	30.0397707200276
2011-07-01	30.3861900916759
2011-10-01	29.6806519984053
2012-01-01	29.7817324998980
2012-04-01	29.3376557208470
2012-07-01	29.1512495927904
2012-10-01	29.3628383794203
2013-01-01	28.5370904811059
2013-04-01	27.8606098134499
2013-07-01	28.5994112340696
2013-10-01	28.5841827761586
2014-01-01	29.0670803008392
2014-04-01	27.9903903308139
2014-07-01	28.6316256527182
2014-10-01	27.8559349005811
2015-01-01	27.0312036828573
2015-04-01	27.1421799108136
2015-07-01	26.8580878320710
2015-10-01	26.0702418990221
2016-01-01	26.3968956567488
2016-04-01	25.3393167775732
2016-07-01	25.6157521841257
2016-10-01	25.3909150380790
2017-01-01	25.9400219978400
2017-04-01	24.9152851555176
2017-07-01	25.0627621898551
2017-10-01	23.8830235666066
2018-01-01	24.3232615583951
2018-04-01	23.5448883305099