Quarter	Percent, Seasonally Adjusted
1998-04-01	3.53286228502866
1999-04-01	3.15357719203873
2000-04-01	2.95929298339582
2001-04-01	3.09633773498992
2002-04-01	2.94738188095390
2003-04-01	3.72125347485469
2004-04-01	4.30309873290679
2005-04-01	4.40631942730190
2006-04-01	4.22062057170779
2007-04-01	4.02829396954802
2008-04-01	3.38413397461900
2009-04-01	3.73420255046606
2010-01-01	4.57848897012097
2010-04-01	4.62345609467644
2010-07-01	4.77513609231641
2010-10-01	4.29296389062309
2011-01-01	4.45789121273079
2011-04-01	3.59748863072625
2011-07-01	4.57152386993036
2011-10-01	4.39425433516442
2012-01-01	4.00489516977011
2012-04-01	4.16341516002794
2012-07-01	4.02419299597990
2012-10-01	4.51912442815030
2013-01-01	4.57497491309841
2013-04-01	4.35879471027304
2013-07-01	4.05733062858143
2013-10-01	4.09500748482962
2014-01-01	4.53265013322566
2014-04-01	4.31729187767579
2014-07-01	4.40366696106860
2014-10-01	4.34990406449777
2015-01-01	3.84653082055727
2015-04-01	4.23192017019252
2015-07-01	4.61302253294324
2015-10-01	4.68790660753476
2016-01-01	4.54901938115057
2016-04-01	4.37136547078374
2016-07-01	4.43697408466667
2016-10-01	4.50194135180846
2017-01-01	4.65934226676224
2017-04-01	4.51381787111690
2017-07-01	4.65547986264834
2017-10-01	4.61888681881239
2018-01-01	4.93909997138752
2018-04-01	5.14284626750196