Quarter	Percent, Seasonally Adjusted
1998-04-01	35.3910830844120
1999-04-01	35.4017414306183
2000-04-01	35.8858145400051
2001-04-01	34.4913962099760
2002-04-01	33.9959810535381
2003-04-01	33.7600455159662
2004-04-01	34.0928329571106
2005-04-01	33.6753633339170
2006-04-01	33.1188256574370
2007-04-01	33.0807384954533
2008-04-01	31.5280332447714
2009-04-01	31.1368987554659
2010-01-01	32.7574252880867
2010-04-01	33.0014276173146
2010-07-01	32.7461245573844
2010-10-01	32.8172734708563
2011-01-01	32.2118978277717
2011-04-01	32.3326690962384
2011-07-01	32.3278326679301
2011-10-01	31.5104259636369
2012-01-01	31.8200124869378
2012-04-01	32.0520654688220
2012-07-01	31.5855559101609
2012-10-01	31.8333663429076
2013-01-01	31.6543783130510
2013-04-01	31.6676591614277
2013-07-01	31.4195591301373
2013-10-01	31.0408956792625
2014-01-01	31.2522425197052
2014-04-01	30.9200861340598
2014-07-01	30.7190749552496
2014-10-01	29.4325165433144
2015-01-01	30.1197976256973
2015-04-01	30.4328783708789
2015-07-01	30.5520805306938
2015-10-01	29.7299736420032
2016-01-01	29.1047791673544
2016-04-01	29.6598210986281
2016-07-01	29.6965994268470
2016-10-01	29.2911778700171
2017-01-01	29.4775281258744
2017-04-01	30.0664186273565
2017-07-01	29.8508345397541
2017-10-01	29.5059887057202
2018-01-01	29.3198264413639
2018-04-01	29.4932273247377