Quarter	Percent, Seasonally Adjusted
1998-01-01	37.5163066076409
1998-04-01	36.4994397103860
1998-07-01	37.7951253952410
1998-10-01	37.6111568611395
1999-01-01	37.1442925813831
1999-04-01	37.5066324277203
1999-07-01	37.1566135691122
1999-10-01	38.1006116024648
2000-01-01	36.4970753093613
2000-04-01	35.8112680111574
2000-07-01	35.9645677762390
2000-10-01	36.4977060772493
2001-01-01	34.2980505025910
2001-04-01	33.9811344218976
2001-07-01	33.9434420087180
2001-10-01	33.2539012010519
2002-01-01	34.2707852975634
2002-04-01	33.0522571412291
2002-07-01	33.3132710853215
2002-10-01	32.0971426068090
2003-01-01	32.0964989829399
2003-04-01	30.9446365680905
2003-07-01	30.9242424137047
2003-10-01	30.9439859357089
2004-01-01	34.2166905465092
2004-04-01	33.8196097969557
2004-07-01	32.9461509518226
2004-10-01	32.8897730022140
2005-01-01	31.2231200473426
2005-04-01	30.4717860589778
2005-07-01	30.5032559115240
2005-10-01	29.5507275500153
2006-01-01	29.9936707876244
2006-04-01	28.2315111210138
2006-07-01	28.3051052230998
2006-10-01	27.8665977685723
2007-01-01	27.6426301544248
2007-04-01	27.4852165801506
2007-07-01	27.5253726536155
2007-10-01	27.3837181661230
2008-01-01	25.9102341826050
2008-04-01	26.4987947042348
2008-07-01	25.4340338181848
2008-10-01	26.5578636251496
2009-01-01	27.6342289808702
2009-04-01	27.0921910094946
2009-07-01	27.7715313913767
2009-10-01	27.1754247360523
2010-01-01	27.4562415592569
2010-04-01	26.8337731044690
2010-07-01	27.0260247115131
2010-10-01	26.8921376559261
2011-01-01	26.5422645517615
2011-04-01	26.3681695702655
2011-07-01	26.1427462634519
2011-10-01	27.2916579131247
2012-01-01	27.1546612933116
2012-04-01	27.2544346511109
2012-07-01	27.1093462996161
2012-10-01	26.6310301689308
2013-01-01	25.6307308474732
2013-04-01	25.3780878901038
2013-07-01	24.6667315639904
2013-10-01	25.3299468501828
2014-01-01	25.7690893946009
2014-04-01	26.1308802505969
2014-07-01	26.2399294129101
2014-10-01	26.2313758334377
2015-01-01	25.0225884602412
2015-04-01	24.2677441442733
2015-07-01	24.0674242761681
2015-10-01	23.8345664601774
2016-01-01	22.3350909907205
2016-04-01	22.9902990333496
2016-07-01	22.8294573973619
2016-10-01	23.3684341656817
2017-01-01	24.7337943967748
2017-04-01	24.5406870564608
2017-07-01	22.7780036266400
2017-10-01	23.6984685731319
2018-01-01	22.4210473538289
2018-04-01	22.1408058241554