Quarter	Percent, Seasonally Adjusted
1998-04-01	2.83674380059922
1999-04-01	2.20452373367314
2000-04-01	1.57682199858983
2001-04-01	0.99948413721950
2002-04-01	2.18060543868651
2003-04-01	3.34722667521642
2004-04-01	3.47648261758691
2005-04-01	3.17359163905175
2006-04-01	2.73004963726613
2007-04-01	2.30167738680792
2008-04-01	2.24376903474424
2009-04-01	3.28818936066374
2010-01-01	4.55499555468533
2010-04-01	4.28002047966227
2010-07-01	4.08531668375228
2010-10-01	3.91204210716451
2011-01-01	3.65631351018048
2011-04-01	3.74853677353958
2011-07-01	3.65151072004414
2011-10-01	3.82461970820934
2012-01-01	3.65921687843384
2012-04-01	3.69989318960201
2012-07-01	3.83077880926871
2012-10-01	4.09561897756836
2013-01-01	4.19466855712360
2013-04-01	4.29947419141900
2013-07-01	4.44927489394211
2013-10-01	4.23013253589824
2014-01-01	4.50344356679426
2014-04-01	4.54613500784126
2014-07-01	4.51558929051114
2014-10-01	4.24831941628212
2015-01-01	4.00172304533075
2015-04-01	4.14038930279806
2015-07-01	4.12242956132962
2015-10-01	4.26512193284608
2016-01-01	4.51516811272171
2016-04-01	4.60564230231009
2016-07-01	4.56356468028884
2016-10-01	4.45727513692157
2017-01-01	4.53458231029294
2017-04-01	4.11355406962912
2017-07-01	4.13920369069940
2017-10-01	4.24303147475443
2018-01-01	4.04818488961839
2018-04-01	4.16293397869284