Quarter	Percent, Seasonally Adjusted
1999-01-01	25.0667494275677
1999-04-01	25.0219041298045
1999-07-01	24.3067149667544
1999-10-01	24.4353781239930
2000-01-01	24.6163669907960
2000-04-01	24.6672041223942
2000-07-01	23.9696490921591
2000-10-01	24.1504333915960
2001-01-01	24.6922371073543
2001-04-01	25.4630504870958
2001-07-01	25.7555279122729
2001-10-01	25.9432129697147
2002-01-01	26.6936968207124
2002-04-01	26.4798658169852
2002-07-01	26.8366654058455
2002-10-01	27.6570392287486
2003-01-01	27.1419819856250
2003-04-01	28.2624512933778
2003-07-01	29.0899401799276
2003-10-01	29.4492327780021
2004-01-01	29.9836617754555
2004-04-01	31.2536520717668
2004-07-01	32.3331929676918
2004-10-01	33.0765200930076
2005-01-01	33.6381576493646
2005-04-01	34.6486667796854
2005-07-01	35.3651098331926
2005-10-01	36.3151622411884
2006-01-01	36.2118206444156
2006-04-01	36.6292714804475
2006-07-01	36.6564646783304
2006-10-01	37.1842010037734
2007-01-01	37.6013481460077
2007-04-01	38.6091891070944
2007-07-01	39.2336005512402
2007-10-01	39.8153036883986
2008-01-01	40.8493170158731
2008-04-01	41.3936976361372
2008-07-01	42.7456089552848
2008-10-01	42.7174307920012
2009-01-01	42.1582769557226
2009-04-01	42.5731571868352
2009-07-01	43.2039606173897
2009-10-01	43.3164290768912
2010-01-01	44.8354403844040
2010-04-01	45.3938631118862
2010-07-01	45.0310678565247
2010-10-01	45.1549879018372
2011-01-01	44.7709744800582
2011-04-01	45.6401445046630
2011-07-01	46.4460055852916
2011-10-01	47.0085350101749
2012-01-01	47.4249435754587
2012-04-01	48.4909469467414
2012-07-01	48.5130500893874
2012-10-01	49.6066189621767
2013-01-01	49.5166342217412
2013-04-01	49.6361366279423
2013-07-01	49.4153330035047
2013-10-01	49.3550569286608
2014-01-01	49.0976628546367
2014-04-01	49.6458384354625
2014-07-01	50.4263424188361
2014-10-01	51.1242990048319
2015-01-01	51.3189069727816
2015-04-01	51.0420932675794
2015-07-01	51.9024436779065
2015-10-01	52.9535878612525
2016-01-01	52.5207744521255
2016-04-01	54.6019371508390
2016-07-01	53.8013720323653
2016-10-01	54.5948782445136
2017-01-01	55.1252419120213
2017-04-01	56.4635041111183
2017-07-01	56.4887577617549
2017-10-01	57.3964708347649
2018-01-01	56.9812796995740
2018-04-01	56.5107905073561