Quarter	Percent, Seasonally Adjusted
1998-04-01	3.61768872697834
1999-04-01	3.11703389616617
2000-04-01	2.67870655299400
2001-04-01	2.50205188151317
2002-04-01	2.93748616134032
2003-04-01	4.14060027750055
2004-04-01	4.33747814260734
2005-04-01	4.45211264206945
2006-04-01	4.01761275734857
2007-04-01	3.67002655012805
2008-04-01	3.36895323451683
2009-04-01	4.13973878067519
2010-01-01	5.09041609957073
2010-04-01	4.96570660337923
2010-07-01	4.78528973102776
2010-10-01	4.48243768075074
2011-01-01	4.44097619795310
2011-04-01	4.18615028626666
2011-07-01	4.46029219584446
2011-10-01	4.62486330532526
2012-01-01	4.27456310063121
2012-04-01	4.33127972746036
2012-07-01	4.50780094344512
2012-10-01	4.91424290261444
2013-01-01	4.84281286046672
2013-04-01	4.83448016167833
2013-07-01	4.73995871322442
2013-10-01	4.67928152079751
2014-01-01	5.01775643294084
2014-04-01	4.99030041362597
2014-07-01	4.89709680858622
2014-10-01	4.52177653919404
2015-01-01	4.44967424139742
2015-04-01	4.74455980820846
2015-07-01	4.99472507512385
2015-10-01	5.13431095698688
2016-01-01	5.03395147519150
2016-04-01	4.95602760327656
2016-07-01	4.96152097948105
2016-10-01	4.85372773224820
2017-01-01	4.97038758443614
2017-04-01	4.71433724087679
2017-07-01	4.84405243048915
2017-10-01	4.79220004335227
2018-01-01	4.94262400097978
2018-04-01	4.94696000055135