Quarter	Percent, Seasonally Adjusted
1999-04-01	37.7572755705430
1999-07-01	37.3312277696667
1999-10-01	37.1022053245695
2000-01-01	36.9731513919471
2000-04-01	36.7089881986089
2000-07-01	36.6532354860180
2000-10-01	36.6562479819759
2001-01-01	36.5484004683170
2001-04-01	36.4885788015331
2001-07-01	36.0485271819273
2001-10-01	36.1944964924408
2002-01-01	36.1091249391710
2002-04-01	36.1741396646887
2002-07-01	36.3976663606405
2002-10-01	36.2878383809693
2003-01-01	36.2089269591900
2003-04-01	36.0793901603984
2003-07-01	35.9770787963036
2003-10-01	35.7674775999987
2004-01-01	35.6075892826483
2004-04-01	35.7106314180281
2004-07-01	35.4111629987666
2004-10-01	34.9480354704890
2005-01-01	34.7170122617716
2005-04-01	34.3370607052739
2005-07-01	33.9253419165760
2005-10-01	33.7318467125122
2006-01-01	33.2872550199521
2006-04-01	33.1643727312747
2006-07-01	32.7363983089986
2006-10-01	32.6766004283140
2007-01-01	29.3049818626529
2007-04-01	29.1843520335047
2007-07-01	29.4323554359244
2007-10-01	29.5417371946619
2008-01-01	29.6745676958965
2008-04-01	29.9645477005799
2008-07-01	30.0748060914372
2008-10-01	30.6973813140008
2009-01-01	31.4065150425451
2009-04-01	31.5978728474449
2009-07-01	32.2305678523215
2009-10-01	32.6511888904806
2010-01-01	33.1431995516335
2010-04-01	33.2594050799858
2010-07-01	33.6351490458379
2010-10-01	33.8026683342040
2011-01-01	33.9928859691930
2011-04-01	33.9548249385654
2011-07-01	34.2475220647018
2011-10-01	33.8977182513986
2012-01-01	33.9696824547928
2012-04-01	34.3337938548062
2012-07-01	34.3341841095222
2012-10-01	34.4268034570589
2013-01-01	34.1210277869444
2013-04-01	33.7037967126721
2013-07-01	33.7922706969371
2013-10-01	33.7313233296086
2014-01-01	33.8317581675008
2014-04-01	34.2437669508128
2014-07-01	33.9286540698034
2014-10-01	33.9568762389911
2015-01-01	33.9263154256444
2015-04-01	33.8355757326044
2015-07-01	33.8956011136593
2015-10-01	33.7725061638133
2016-01-01	33.7024381261963
2016-04-01	33.1171042620799
2016-07-01	33.1891232741862
2016-10-01	33.5011437825620
2017-01-01	33.4068583260941
2017-04-01	33.7798294266213
2017-07-01	33.6195103905416
2017-10-01	33.2641590326144
2018-01-01	33.2950181177658
2018-04-01	33.1542441030167