Quarter	Percent, Seasonally Adjusted
1999-01-01	57.2069219271217
1999-04-01	56.8698017757490
1999-07-01	56.2700581811786
1999-10-01	55.5671224395404
2000-01-01	55.3187187782088
2000-04-01	54.9008013420054
2000-07-01	54.5717312753891
2000-10-01	54.3474246936860
2001-01-01	56.1876375044541
2001-04-01	56.1427113428538
2001-07-01	55.6168961654587
2001-10-01	55.2563033542106
2002-01-01	53.9076318050852
2002-04-01	53.1414961203706
2002-07-01	52.6809910359300
2002-10-01	52.4127294236365
2003-01-01	51.9458546221540
2003-04-01	51.4297624071594
2003-07-01	50.8022352293403
2003-10-01	50.4946795372460
2004-01-01	50.2958283293694
2004-04-01	49.9037887816571
2004-07-01	49.3909901452855
2004-10-01	48.8451231671617
2005-01-01	48.7726181090604
2005-04-01	48.0963263045918
2005-07-01	48.1656990884018
2005-10-01	47.5859469168908
2006-01-01	46.9852831718474
2006-04-01	46.4665516885660
2006-07-01	46.4155801682965
2006-10-01	45.6726275723238
2007-01-01	45.5076821471223
2007-04-01	45.2708164733807
2007-07-01	44.7960879940553
2007-10-01	44.5027643836305
2008-01-01	44.1646766802049
2008-04-01	43.6305669031375
2008-07-01	43.3923011050269
2008-10-01	42.5000570147519
2009-01-01	42.2765530722829
2009-04-01	42.0878491828701
2009-07-01	41.9908005575046
2009-10-01	41.8559018832220
2010-01-01	41.4119567755810
2010-04-01	41.1519443123606
2010-07-01	40.9464604011631
2010-10-01	40.7176313992588
2011-01-01	40.5939862161388
2011-04-01	39.9864855678464
2011-07-01	40.0746659747695
2011-10-01	40.0521552944971
2012-01-01	39.4919283514334
2012-04-01	39.4322933338254
2012-07-01	39.2533976653866
2012-10-01	39.2736367045652
2013-01-01	39.1958201879486
2013-04-01	39.3660991823113
2013-07-01	39.4234741051307
2013-10-01	39.3766418730227
2014-01-01	39.5674234486656
2014-04-01	39.7204482921929
2014-07-01	39.9818616300030
2014-10-01	39.5314398563032
2015-01-01	39.8885383982137
2015-04-01	39.3152802479561
2015-07-01	39.9431212483045
2015-10-01	39.5487186003193
2016-01-01	39.6556325905784
2016-04-01	39.4259752139216
2016-07-01	39.6671052562503
2016-10-01	39.9929886331239
2017-01-01	40.1627890892996
2017-04-01	40.2740009058209
2017-07-01	40.3008269654121
2017-10-01	40.1140805907283
2018-01-01	40.4621792975558
2018-04-01	40.1683919531410
2018-07-01	40.3780979460914