Quarter	Percent, Seasonally Adjusted
1999-01-01	30.6817277623047
1999-04-01	30.7439894622647
1999-07-01	30.4992413775270
1999-10-01	30.2861701511819
2000-01-01	30.1270006309512
2000-04-01	29.9262541321749
2000-07-01	29.6736996704236
2000-10-01	29.4095091936033
2001-01-01	30.5592188997313
2001-04-01	30.2734186572892
2001-07-01	30.0923517645986
2001-10-01	29.8665981616583
2002-01-01	29.5393571658393
2002-04-01	29.3201146711672
2002-07-01	29.0325315806453
2002-10-01	28.8641034688348
2003-01-01	28.6026532121514
2003-04-01	28.3430560840870
2003-07-01	28.0925156697920
2003-10-01	27.9147930263854
2004-01-01	28.0238884762866
2004-04-01	27.9309076371830
2004-07-01	27.7578147858481
2004-10-01	27.5494295842879
2005-01-01	27.2529975812514
2005-04-01	27.0399553882157
2005-07-01	26.9806289774306
2005-10-01	26.7280042675150
2006-01-01	26.5346616732519
2006-04-01	26.5620073035161
2006-07-01	26.3875022343792
2006-10-01	26.3754258958966
2007-01-01	26.3469818719915
2007-04-01	26.0521180482425
2007-07-01	26.0005858233642
2007-10-01	26.0342639971994
2008-01-01	25.7669553685988
2008-04-01	25.7470159343199
2008-07-01	25.8268511322014
2008-10-01	25.9553396669954
2009-01-01	25.9511887137742
2009-04-01	26.3615672045440
2009-07-01	27.0288289667764
2009-10-01	26.8586333181493
2010-01-01	26.7886627935840
2010-04-01	26.5603833208642
2010-07-01	26.8948871722965
2010-10-01	27.1093503880924
2011-01-01	27.2025020165991
2011-04-01	27.2712442088999
2011-07-01	27.2878068644104
2011-10-01	27.2641359137261
2012-01-01	27.5967889804045
2012-04-01	27.5116510299900
2012-07-01	27.6270656433636
2012-10-01	27.9100031472401
2013-01-01	27.8948877976925
2013-04-01	28.4141786748458
2013-07-01	28.3547923728423
2013-10-01	28.5870690706034
2014-01-01	29.0884120151797
2014-04-01	28.9982918040350
2014-07-01	29.1727016230114
2014-10-01	28.9741527029924
2015-01-01	29.0913223466589
2015-04-01	29.0606173155508
2015-07-01	29.2019305465069
2015-10-01	29.3072102351356
2016-01-01	29.2215157000065
2016-04-01	29.4677663156252
2016-07-01	29.6555725862836
2016-10-01	29.7870206505538
2017-01-01	29.8454720513724
2017-04-01	30.0020576458690
2017-07-01	29.9222339190305
2017-10-01	30.0138831032698
2018-01-01	30.1029787160091
2018-04-01	29.9794080989725
2018-07-01	30.0256605361690