Quarter	Percent, Seasonally Adjusted
1998-01-01	14.8732099304580
1998-04-01	14.8662086474678
1998-07-01	15.0144480385301
1998-10-01	15.0581630046101
1999-01-01	15.0131177876916
1999-04-01	15.0353799140727
1999-07-01	15.0205403250651
1999-10-01	14.8718783022724
2000-01-01	14.8942638053645
2000-04-01	15.3525559349590
2000-07-01	15.3157035786959
2000-10-01	15.6863727792317
2001-01-01	16.1210810358366
2001-04-01	15.7854787564111
2001-07-01	16.3220144692596
2001-10-01	16.7667548832999
2002-01-01	16.8595314823171
2002-04-01	17.2479190917363
2002-07-01	17.5155182278940
2002-10-01	17.6682029121092
2003-01-01	17.8313922716327
2003-04-01	18.3791199046462
2003-07-01	18.6850040701873
2003-10-01	18.9629282720306
2004-01-01	18.8950192645135
2004-04-01	19.2985630880040
2004-07-01	20.0827657708030
2004-10-01	20.4689902609924
2005-01-01	20.6358619057910
2005-04-01	20.6632258078072
2005-07-01	20.6443866939614
2005-10-01	21.1416149993885
2006-01-01	21.2059920978722
2006-04-01	21.7863562544210
2006-07-01	22.1014214104132
2006-10-01	22.2118047775959
2007-01-01	22.7822524529321
2007-04-01	22.8564039361033
2007-07-01	22.9833212969523
2007-10-01	23.1867706264952
2008-01-01	23.1054911771258
2008-04-01	23.7751603796908
2008-07-01	24.1950846522514
2008-10-01	24.5157556124633
2009-01-01	24.8833164525093
2009-04-01	25.4650988149399
2009-07-01	25.2765020926605
2009-10-01	25.3922276920575
2010-01-01	25.6792620083791
2010-04-01	25.8538195467940
2010-07-01	26.2417134317668
2010-10-01	26.5551995155185
2011-01-01	27.1971222867175
2011-04-01	27.4285016260128
2011-07-01	28.4055445431556
2011-10-01	29.1972397138988
2012-01-01	29.9576159154646
2012-04-01	30.6960295692642
2012-07-01	31.0087876042936
2012-10-01	31.6409993110809
2013-01-01	31.9408278550116
2013-04-01	32.7638426892676
2013-07-01	33.6567607471439
2013-10-01	34.4492969900424
2014-01-01	35.7031661175661
2014-04-01	36.1606624344734
2014-07-01	37.1066825719584
2014-10-01	37.3855917883515
2015-01-01	37.5899683143010
2015-04-01	37.9045902771724
2015-07-01	37.9785984093342
2015-10-01	38.2092753831548
2016-01-01	38.7029048770525
2016-04-01	39.4574951239568
2016-07-01	40.0169247070031
2016-10-01	40.7459399724166
2017-01-01	41.4618094985649
2017-04-01	42.1018354388865
2017-07-01	42.4069961398660
2017-10-01	43.1903903831898
2018-01-01	43.8199216461748
2018-04-01	44.3336517428551