Quarter	Percent, Seasonally Adjusted
1999-01-01	45.1777353823260
1999-04-01	45.3898914880257
1999-07-01	45.5364214611237
1999-10-01	45.5910849747374
2000-01-01	45.5403952897152
2000-04-01	45.7054002361406
2000-07-01	45.7561219210679
2000-10-01	46.0896392992860
2001-01-01	45.5883980742259
2001-04-01	45.2929300793910
2001-07-01	45.4750354453518
2001-10-01	45.1813947845651
2002-01-01	45.4793987587780
2002-04-01	45.6957951219460
2002-07-01	45.8276857143063
2002-10-01	46.1065483215178
2003-01-01	46.5447846289858
2003-04-01	46.8876019692800
2003-07-01	46.9927220721005
2003-10-01	47.2140185822413
2004-01-01	47.0532141990260
2004-04-01	46.8433548701794
2004-07-01	46.8531662319378
2004-10-01	47.2396725613344
2005-01-01	47.5346549395110
2005-04-01	47.7994839719981
2005-07-01	47.8974694008931
2005-10-01	47.8359220923878
2006-01-01	48.2609426164666
2006-04-01	48.2022015344268
2006-07-01	48.1616557794271
2006-10-01	48.1874262195573
2007-01-01	47.8887150119044
2007-04-01	47.7319324330542
2007-07-01	47.7036779471257
2007-10-01	47.7937263237708
2008-01-01	47.4146527277959
2008-04-01	47.2675925049603
2008-07-01	47.7212169769366
2008-10-01	47.8400769300468
2009-01-01	47.5928855581966
2009-04-01	47.6469984003601
2009-07-01	47.6205598413511
2009-10-01	48.0286768217224
2010-01-01	48.7079553190462
2010-04-01	48.8339105787651
2010-07-01	48.9620418817276
2010-10-01	48.7955505248191
2011-01-01	48.7611590998003
2011-04-01	49.1337301961382
2011-07-01	49.0700355955954
2011-10-01	49.3890411918172
2012-01-01	49.7118013854723
2012-04-01	50.2117348545319
2012-07-01	50.6283046011945
2012-10-01	50.4332125349230
2013-01-01	50.1631970437647
2013-04-01	50.4674421447248
2013-07-01	50.4612203813606
2013-10-01	50.9165800771461
2014-01-01	51.7867430022299
2014-04-01	51.9932497862939
2014-07-01	52.2253918891385
2014-10-01	52.3920041929225
2015-01-01	52.9518113019916
2015-04-01	53.1775480439515
2015-07-01	53.3268659708889
2015-10-01	53.3351910642778
2016-01-01	53.6829032141784
2016-04-01	53.8962595792326
2016-07-01	54.2305545142511
2016-10-01	54.5426321122847
2017-01-01	54.3489316946248
2017-04-01	54.5589585531837
2017-07-01	54.6664183856073
2017-10-01	54.7405016566458
2018-01-01	54.9997290782448
2018-04-01	55.1128166062782