Quarter	Percent, Seasonally Adjusted
1999-01-01	45.6978400479898
1999-04-01	45.9503038579513
1999-07-01	46.0539001094457
1999-10-01	46.2317168724284
2000-01-01	46.2690884351586
2000-04-01	46.3756846407591
2000-07-01	46.6501018084664
2000-10-01	47.0009065758729
2001-01-01	46.4240942391686
2001-04-01	46.1589603925566
2001-07-01	46.2379888130251
2001-10-01	45.9860392103244
2002-01-01	46.1718404239524
2002-04-01	46.2132049901879
2002-07-01	46.1553486845914
2002-10-01	46.2782756841420
2003-01-01	46.4409670827230
2003-04-01	46.8831231861043
2003-07-01	46.9907310490385
2003-10-01	47.0576671207917
2004-01-01	46.9102272570005
2004-04-01	46.6286063185782
2004-07-01	46.4757555463685
2004-10-01	46.5822481772550
2005-01-01	46.5986563694687
2005-04-01	46.4630651966845
2005-07-01	46.6162152119963
2005-10-01	46.5843594129302
2006-01-01	46.8225283084140
2006-04-01	46.9366261200259
2006-07-01	46.7415588973907
2006-10-01	46.9328884714364
2007-01-01	46.8848865833090
2007-04-01	46.7339128009123
2007-07-01	46.5366075709469
2007-10-01	46.2316026163226
2008-01-01	46.0812014232263
2008-04-01	45.9144958336364
2008-07-01	46.1750558503282
2008-10-01	45.8593771730963
2009-01-01	45.2297468432982
2009-04-01	45.0199474860016
2009-07-01	44.5013046142906
2009-10-01	44.6681805922612
2010-01-01	44.6723147821803
2010-04-01	44.6338996114786
2010-07-01	44.7958324406620
2010-10-01	44.7749113981033
2011-01-01	44.8083931583124
2011-04-01	45.0394280680233
2011-07-01	45.1570268160949
2011-10-01	45.3457955658648
2012-01-01	45.4613827119921
2012-04-01	45.8562640560561
2012-07-01	46.2929495373723
2012-10-01	46.2933358613640
2013-01-01	45.9594216091285
2013-04-01	46.7400737607372
2013-07-01	47.0516307676540
2013-10-01	47.7307762976889
2014-01-01	49.2491229422498
2014-04-01	49.1478320333285
2014-07-01	49.7383628163775
2014-10-01	50.0019424932662
2015-01-01	50.3676303781158
2015-04-01	50.8566773479396
2015-07-01	51.3210790279157
2015-10-01	51.5621004215134
2016-01-01	52.1940924124735
2016-04-01	52.7040764652967
2016-07-01	52.9905250621632
2016-10-01	53.5022093947902
2017-01-01	53.5592061997256
2017-04-01	53.8782755307195
2017-07-01	54.0464865359813
2017-10-01	54.2598880383869
2018-01-01	54.5769600812340
2018-04-01	54.6699203860912