Quarter	Percent, Seasonally Adjusted
1999-01-01	53.6670282062628
1999-04-01	49.2062534819606
1999-07-01	49.4389760963026
1999-10-01	52.3086034531678
2000-01-01	51.4988617727362
2000-04-01	51.5256734236708
2000-07-01	50.1418820152734
2000-10-01	50.7130098109614
2001-01-01	50.7006412446498
2001-04-01	48.0652333569781
2001-07-01	48.1077989370675
2001-10-01	45.1148715040705
2002-01-01	47.9335720751070
2002-04-01	47.8080392108158
2002-07-01	45.9258323999216
2002-10-01	46.5347892040704
2003-01-01	44.9966990365355
2003-04-01	44.6047919095277
2003-07-01	43.0025154912155
2003-10-01	43.6757009868011
2004-01-01	43.4383115015568
2004-04-01	42.4349164582013
2004-07-01	43.3109254752651
2004-10-01	44.9679160678584
2005-01-01	42.6799110655321
2005-04-01	44.2358496284664
2005-07-01	43.6575468234595
2005-10-01	42.1513101988592
2006-01-01	42.3645068683229
2006-04-01	44.2308814901223
2006-07-01	43.0908461367256
2006-10-01	43.4269173939672
2007-01-01	44.9617679610409
2007-04-01	43.8802940907156
2007-07-01	43.9247133578295
2007-10-01	46.7966604938455
2008-01-01	46.1997651541971
2008-04-01	45.7240355364410
2008-07-01	46.5357393952835
2008-10-01	49.5083226027292
2009-01-01	48.4543568895726
2009-04-01	45.6232038813049
2009-07-01	46.1648262916363
2009-10-01	45.8178274729696
2010-01-01	45.3406008911742
2010-04-01	43.6886730969479
2010-07-01	42.9426859700917
2010-10-01	44.6178026245088
2011-01-01	42.3499010016664
2011-04-01	42.3728143181539
2011-07-01	41.5737644075137
2011-10-01	41.5071757601403
2012-01-01	40.6955935701858
2012-04-01	40.5362992709157
2012-07-01	41.1442015444299
2012-10-01	41.9463114433558
2013-01-01	41.3890784166810
2013-04-01	39.6979658366996
2013-07-01	38.9115378390542
2013-10-01	40.4978911488866
2014-01-01	40.9038137379875
2014-04-01	40.0370835731034
2014-07-01	39.5975187573343
2014-10-01	38.1819165625793
2015-01-01	37.2613353632161
2015-04-01	36.9031026750598
2015-07-01	38.0524817965810
2015-10-01	37.4561978270230
2016-01-01	35.0514358348480
2016-04-01	32.6854468578570
2016-07-01	33.4458171633147
2016-10-01	33.4221637337592
2017-01-01	33.4865498533727
2017-04-01	32.1446262877098
2017-07-01	31.8919896623215
2017-10-01	32.0516659241747
2018-01-01	32.7925361639855
2018-04-01	31.6273817727036