Quarter	Percent, Seasonally Adjusted
1998-01-01	54.2061467955321
1998-04-01	53.3751544643179
1998-07-01	53.4118694913846
1998-10-01	53.0761330346129
1999-01-01	52.4579695558717
1999-04-01	51.9869992059122
1999-07-01	50.6795137837609
1999-10-01	50.4828945787836
2000-01-01	49.9149758204336
2000-04-01	48.6750104913417
2000-07-01	47.8383076943673
2000-10-01	46.8076057542737
2001-01-01	46.1860669828664
2001-04-01	45.3667096554552
2001-07-01	44.9901956597798
2001-10-01	44.0822601630776
2002-01-01	42.9860869492981
2002-04-01	43.0730308430446
2002-07-01	42.0261390317951
2002-10-01	40.9334250654083
2003-01-01	40.3792060170287
2003-04-01	39.6669794839380
2003-07-01	39.1180815304366
2003-10-01	39.2146991770533
2004-01-01	38.5951340113631
2004-04-01	38.7464482767407
2004-07-01	38.7524659835882
2004-10-01	38.7985355858090
2005-01-01	39.7113984108287
2005-04-01	38.6641257945430
2005-07-01	38.5335014197917
2005-10-01	38.5154898368730
2006-01-01	38.1865849532805
2006-04-01	37.7399382286818
2006-07-01	37.5101636636480
2006-10-01	37.4351531764593
2007-01-01	37.3841390320366
2007-04-01	36.8247787990455
2007-07-01	36.4553156774307
2007-10-01	36.2457461945423
2008-01-01	35.8098815285523
2008-04-01	35.9169450655148
2008-07-01	35.7976932592152
2008-10-01	36.0236466410921
2009-01-01	36.5756055533270
2009-04-01	37.3223335397554
2009-07-01	37.5463541763252
2009-10-01	37.5555344947064
2010-01-01	36.7426074823498
2010-04-01	36.1716697922026
2010-07-01	36.1446048223271
2010-10-01	35.6823931174134
2011-01-01	35.0308112850528
2011-04-01	35.5923590047773
2011-07-01	35.8250900600961
2011-10-01	35.4204020130747
2012-01-01	36.3766558277914
2012-04-01	36.7643584477711
2012-07-01	36.1392079122619
2012-10-01	36.4220570076466
2013-01-01	36.5142946575329
2013-04-01	36.1476231902412
2013-07-01	37.1589396896916
2013-10-01	37.3285343553483
2014-01-01	37.6410336972927
2014-04-01	38.2694690895179
2014-07-01	38.2601258835681
2014-10-01	38.0674486091415
2015-01-01	37.9470180802600
2015-04-01	37.2315035977768
2015-07-01	36.6237463750308
2015-10-01	37.6437363942494
2016-01-01	37.3765405995647
2016-04-01	37.6933669694422
2016-07-01	37.7158833888291
2016-10-01	37.1126830629283
2017-01-01	36.9748933338186
2017-04-01	36.8927827690940
2017-07-01	36.6736792026320
2017-10-01	35.3506422497985
2018-01-01	34.7803033018540
2018-04-01	33.8026060167590