Quarter	Percent, Seasonally Adjusted
1998-01-01	22.8695801102877
1998-04-01	23.0028480274528
1998-07-01	22.5051016804926
1998-10-01	23.1978332595524
1999-01-01	22.9686478740527
1999-04-01	23.3792950318337
1999-07-01	22.8558679450291
1999-10-01	23.5621993759037
2000-01-01	22.9022051977320
2000-04-01	21.8908550561349
2000-07-01	22.2680919400047
2000-10-01	22.4042088771523
2001-01-01	22.4885386434373
2001-04-01	22.7468140675917
2001-07-01	23.4754162329240
2001-10-01	23.8036164725972
2002-01-01	25.0435740165206
2002-04-01	25.6600756051052
2002-07-01	26.1974896587466
2002-10-01	26.5802104697376
2003-01-01	27.3774186136495
2003-04-01	28.5271796913811
2003-07-01	29.1761955587413
2003-10-01	28.6028432870376
2004-01-01	29.4949372750058
2004-04-01	29.3620640616768
2004-07-01	29.4537762059906
2004-10-01	29.3156946556733
2005-01-01	30.3319893773927
2005-04-01	30.4202679339993
2005-07-01	31.4331159084342
2005-10-01	31.2682293150016
2006-01-01	31.7276483889217
2006-04-01	32.2007382246076
2006-07-01	32.3221052716440
2006-10-01	32.0853885816406
2007-01-01	32.8655288598244
2007-04-01	33.6687527494401
2007-07-01	33.5742058820143
2007-10-01	33.9017590385020
2008-01-01	34.1630371161611
2008-04-01	34.7373089770450
2008-07-01	34.0085845049457
2008-10-01	34.8223836341316
2009-01-01	35.4180361853453
2009-04-01	35.1295962038391
2009-07-01	34.9230563034898
2009-10-01	34.5776832609168
2010-01-01	35.2326310604759
2010-04-01	35.0734639946228
2010-07-01	34.9814309959446
2010-10-01	36.6599238046568
2011-01-01	36.8849747198302
2011-04-01	37.1938749392213
2011-07-01	37.2759338761316
2011-10-01	37.2557582030876
2012-01-01	37.6774243681747
2012-04-01	38.8362273684527
2012-07-01	39.5721704423313
2012-10-01	40.0950460718272
2013-01-01	40.3678613881310
2013-04-01	41.0228888397769
2013-07-01	41.7792315783128
2013-10-01	42.5033561481172
2014-01-01	43.1268430984606
2014-04-01	43.2222291528708
2014-07-01	44.3890795835926
2014-10-01	44.6590582414725
2015-01-01	44.9423367204149
2015-04-01	45.9970572491063
2015-07-01	46.3795021083580
2015-10-01	46.3869872331586
2016-01-01	47.4280808188190
2016-04-01	48.7842344767511
2016-07-01	49.6384854367128
2016-10-01	51.2735464430185
2017-01-01	52.2296172761159
2017-04-01	51.9519460465343
2017-07-01	53.4381742535706
2017-10-01	54.2472024085593
2018-01-01	55.7142610214348
2018-04-01	56.4827939457451