Quarter	Percent, Seasonally Adjusted
1999-01-01	37.1120606604679
1999-04-01	37.2316107507718
1999-07-01	37.4184796245234
1999-10-01	37.6759344738781
2000-01-01	37.6260643077099
2000-04-01	37.1358529088522
2000-07-01	36.4624663230185
2000-10-01	37.0070368463535
2001-01-01	36.9072896393346
2001-04-01	37.7439442413803
2001-07-01	36.2295181019651
2001-10-01	36.1719666588904
2002-01-01	36.0925668534370
2002-04-01	36.3461483664766
2002-07-01	37.4482359066934
2002-10-01	38.2144914034236
2003-01-01	37.7307651462237
2003-04-01	38.1140793100542
2003-07-01	38.6267668368468
2003-10-01	37.0720480852703
2004-01-01	35.9046136209945
2004-04-01	34.6595318194262
2004-07-01	34.1299245654676
2004-10-01	35.3558904535692
2005-01-01	34.2736063464805
2005-04-01	34.4481748885116
2005-07-01	33.8216890162550
2005-10-01	33.0812278040141
2006-01-01	32.6936308758107
2006-04-01	32.2531569504500
2006-07-01	33.8131412136290
2006-10-01	34.2470766687587
2007-01-01	33.8843918231587
2007-04-01	32.9708695795951
2007-07-01	33.1701145968055
2007-10-01	33.5741862707047
2008-01-01	33.2174410223372
2008-04-01	33.1827372287673
2008-07-01	31.9457805467045
2008-10-01	31.5130161126369
2009-01-01	32.5474760847162
2009-04-01	32.6987894339490
2009-07-01	31.5595099880075
2009-10-01	31.7427088385012
2010-01-01	32.3673937380376
2010-04-01	31.8280762266910
2010-07-01	33.5950093433079
2010-10-01	32.6170801747602
2011-01-01	33.9075929610084
2011-04-01	34.0703061173187
2011-07-01	33.8168061573142
2011-10-01	32.3745838476985
2012-01-01	32.2898694955674
2012-04-01	33.9086931343592
2012-07-01	33.2253648711205
2012-10-01	32.9214057767759
2013-01-01	33.3635132577430
2013-04-01	33.6064889187934
2013-07-01	32.9417425120927
2013-10-01	33.7338174314335
2014-01-01	32.7291588492280
2014-04-01	32.2659376534063
2014-07-01	32.8544290358104
2014-10-01	33.1771981457843
2015-01-01	33.1303755310713
2015-04-01	31.5624233411305
2015-07-01	31.3207725584040
2015-10-01	32.2101634370909
2016-01-01	32.1015837446301
2016-04-01	31.1087770934087
2016-07-01	32.2105758168298
2016-10-01	30.2091861116326
2017-01-01	29.3456204062093
2017-04-01	29.6691979363111
2017-07-01	28.1808363078736
2017-10-01	27.8836355109488
2018-01-01	28.3751183473565
2018-04-01	28.6341453664413