Quarter	Percent, Seasonally Adjusted
1998-04-01	29.2164357381749
1999-04-01	31.4531548757170
2000-04-01	29.3586698337292
2001-04-01	31.4090480678605
2002-04-01	29.6123306865950
2003-04-01	29.5979667282810
2004-04-01	31.8596171376481
2005-04-01	33.4308869878433
2006-04-01	29.8464277765413
2007-04-01	29.7535211267606
2008-04-01	31.8890814558059
2009-04-01	33.8678640153945
2010-01-01	31.6185544999719
2010-04-01	30.1222946447456
2010-07-01	30.7294902293664
2010-10-01	32.1428010086073
2011-01-01	30.8472519592587
2011-04-01	31.1353076275663
2011-07-01	30.9554005611883
2011-10-01	30.4374999812002
2012-01-01	32.2241247492055
2012-04-01	32.0914315885797
2012-07-01	30.3606612045919
2012-10-01	29.7985320446649
2013-01-01	29.2921916761598
2013-04-01	30.9233196684224
2013-07-01	32.6286202231433
2013-10-01	31.4512662723001
2014-01-01	31.3571256328187
2014-04-01	30.9910367701563
2014-07-01	31.4579410757496
2014-10-01	32.8341219740653
2015-01-01	34.0667406900362
2015-04-01	32.7110571772991
2015-07-01	33.3758360867454
2015-10-01	32.8201901181027
2016-01-01	31.4347679897040
2016-04-01	33.6543820422957
2016-07-01	33.2293844696109
2016-10-01	30.5458087239636
2017-01-01	30.7593608137045
2017-04-01	30.5169186877143
2017-07-01	29.1737719095939
2017-10-01	31.4017967508322
2018-01-01	32.0179772676029
2018-04-01	31.2196222088868