Quarter	Percent, Seasonally Adjusted
1998-01-01	29.3770067014490
1998-04-01	29.5179549744449
1998-07-01	29.5788468852478
1998-10-01	29.5546200864945
1999-01-01	29.6206663156781
1999-04-01	29.7513860635039
1999-07-01	29.9022234417084
1999-10-01	29.9293653233949
2000-01-01	30.1496259298273
2000-04-01	30.4655960363981
2000-07-01	30.6424280810186
2000-10-01	30.9251723022708
2001-01-01	30.8955754497031
2001-04-01	30.9594609637386
2001-07-01	31.0238513403403
2001-10-01	31.0317886156978
2002-01-01	31.1097266824181
2002-04-01	30.9558899838041
2002-07-01	30.9786369022595
2002-10-01	31.0201650209051
2003-01-01	31.3501331796106
2003-04-01	31.5286342456131
2003-07-01	31.6832890654136
2003-10-01	31.7357564976431
2004-01-01	31.7756203701561
2004-04-01	31.7251969235170
2004-07-01	31.6933669999652
2004-10-01	31.5620291257175
2005-01-01	31.2682930827294
2005-04-01	31.3057202789428
2005-07-01	31.1932095516455
2005-10-01	31.4006465628304
2006-01-01	31.2442596380470
2006-04-01	31.4244018494222
2006-07-01	31.5375843162400
2006-10-01	31.5721618088529
2007-01-01	31.7179913665569
2007-04-01	31.7132103910290
2007-07-01	31.5842200518808
2007-10-01	31.6342087432961
2008-01-01	31.7535514127343
2008-04-01	31.7383733105716
2008-07-01	31.9166797381514
2008-10-01	31.7764859198442
2009-01-01	31.6770644996192
2009-04-01	31.6602839935759
2009-07-01	31.7203538226783
2009-10-01	31.7487786049558
2010-01-01	31.8679967239886
2010-04-01	31.9753503277316
2010-07-01	31.8877522914702
2010-10-01	32.0927185961010
2011-01-01	32.3609355707068
2011-04-01	32.2756555759439
2011-07-01	32.5683471794312
2011-10-01	32.7277521902243
2012-01-01	32.5399034701655
2012-04-01	32.4236925990544
2012-07-01	32.1744312024191
2012-10-01	32.1068490568825
2013-01-01	31.9801609838808
2013-04-01	31.9136224124774
2013-07-01	31.9063033370507
2013-10-01	31.9165512713312
2014-01-01	31.7945535388277
2014-04-01	31.8099230688871
2014-07-01	31.8190713955712
2014-10-01	31.7767222573459
2015-01-01	31.8506313164516
2015-04-01	32.0222767849878
2015-07-01	32.1522848005933
2015-10-01	31.9108976546603
2016-01-01	31.6821067899232
2016-04-01	31.6567589695394
2016-07-01	31.5764145518711
2016-10-01	31.5473356001066
2017-01-01	31.6053905339930
2017-04-01	31.5037253912381
2017-07-01	31.3385033079912
2017-10-01	31.3752959693864
2018-01-01	31.2719137114440
2018-04-01	31.2058714183001