Quarter	Percent, Seasonally Adjusted
1998-01-01	28.9686178127949
1998-04-01	29.0601014981605
1998-07-01	29.0990109076940
1998-10-01	29.0624731163547
1999-01-01	28.9488433318946
1999-04-01	29.0651791925862
1999-07-01	29.0982143946093
1999-10-01	29.0479848491498
2000-01-01	28.8469572414178
2000-04-01	29.0397972544550
2000-07-01	29.0031380256485
2000-10-01	28.9215773454281
2001-01-01	29.1150530327197
2001-04-01	28.8216860933556
2001-07-01	29.3019459485680
2001-10-01	29.6597880567863
2002-01-01	29.6674868063696
2002-04-01	30.1299973303132
2002-07-01	30.3929900633533
2002-10-01	30.4205513019765
2003-01-01	30.8872967430960
2003-04-01	31.4473943121331
2003-07-01	31.6014488062964
2003-10-01	31.8816196677650
2004-01-01	31.2798565648009
2004-04-01	31.6317545268622
2004-07-01	32.1759404724764
2004-10-01	32.4459303191686
2005-01-01	32.4581461111096
2005-04-01	32.4281778876801
2005-07-01	32.3551250242034
2005-10-01	32.9567375398785
2006-01-01	32.9007624076445
2006-04-01	33.2799008979777
2006-07-01	33.6505419717264
2006-10-01	33.7900137888297
2007-01-01	34.3366476909499
2007-04-01	34.3950385571283
2007-07-01	34.6182826527725
2007-10-01	34.6892201694612
2008-01-01	34.8130268625736
2008-04-01	35.2658470240085
2008-07-01	35.6640487022092
2008-10-01	35.9021299504343
2009-01-01	36.3745956317218
2009-04-01	36.9941832355783
2009-07-01	36.9624846321698
2009-10-01	37.1876501012350
2010-01-01	37.6259942593495
2010-04-01	37.6280171659534
2010-07-01	37.9416482673686
2010-10-01	38.2834688194754
2011-01-01	38.5834804413183
2011-04-01	38.8043640714268
2011-07-01	39.4913921118038
2011-10-01	40.5027811861000
2012-01-01	41.4428831064606
2012-04-01	42.5139310302326
2012-07-01	42.7479145708853
2012-10-01	43.4396782808103
2013-01-01	44.0105128476422
2013-04-01	44.6352208107380
2013-07-01	45.7193330896644
2013-10-01	46.7610667659547
2014-01-01	47.7451122935188
2014-04-01	48.4334531769172
2014-07-01	49.3946772989665
2014-10-01	50.0816607987579
2015-01-01	50.4171997532026
2015-04-01	51.0528238162675
2015-07-01	51.2341200876446
2015-10-01	51.5823187800985
2016-01-01	52.6013467379518
2016-04-01	53.2536903920594
2016-07-01	53.6342541554796
2016-10-01	54.1033778191080
2017-01-01	54.6727382109479
2017-04-01	55.0866530389115
2017-07-01	55.6585045754244
2017-10-01	56.2125422536005
2018-01-01	56.6205263219615
2018-04-01	57.2681036064901