Quarter	Percent, Seasonally Adjusted
1998-04-01	36.0384805130735
1999-04-01	30.5789213260762
2000-04-01	33.8840937114673
2001-04-01	33.0889540566960
2002-04-01	31.8980033678133
2003-04-01	31.7229890528320
2004-04-01	34.0530391926778
2005-04-01	35.2831940575673
2006-04-01	32.9650092081031
2007-04-01	35.5302166476625
2008-04-01	33.8803956834532
2009-04-01	31.4934342310260
2010-01-01	32.3547095434221
2010-04-01	33.3212235581608
2010-07-01	32.1335708443172
2010-10-01	32.7403851163842
2011-01-01	32.5412283088927
2011-04-01	31.5937945747099
2011-07-01	32.0210931624058
2011-10-01	32.2763015383670
2012-01-01	32.6976583372035
2012-04-01	34.0011416669707
2012-07-01	33.3632303278024
2012-10-01	35.0238333493545
2013-01-01	33.4310834910546
2013-04-01	33.5208187862681
2013-07-01	33.0538556711859
2013-10-01	31.7560357151617
2014-01-01	32.8692973136234
2014-04-01	32.8560075921868
2014-07-01	33.8179259489007
2014-10-01	30.7151872574374
2015-01-01	31.6766955451637
2015-04-01	32.3056570046348
2015-07-01	32.1398401987496
2015-10-01	30.6341465735612
2016-01-01	30.7024286894669
2016-04-01	30.8982272942606
2016-07-01	31.2911432315076
2016-10-01	31.2654328254244
2017-01-01	31.1995631678370
2017-04-01	32.6817754228718
2017-07-01	32.4778214180255
2017-10-01	32.6048943593023
2018-01-01	33.3061964371258
2018-04-01	33.8911500610964