Quarter	Percent, Seasonally Adjusted
1999-01-01	47.2633846856593
1999-04-01	47.1223920775282
1999-07-01	47.0431048910841
1999-10-01	47.4393664866774
2000-01-01	47.5565583093236
2000-04-01	47.6577464547508
2000-07-01	48.3812581291428
2000-10-01	48.5032596010418
2001-01-01	47.8656493381456
2001-04-01	48.1126717233624
2001-07-01	48.2455312030896
2001-10-01	48.7258596806410
2002-01-01	49.1328023882629
2002-04-01	49.1143495539224
2002-07-01	49.0795533920076
2002-10-01	49.3198265852919
2003-01-01	49.3023735526723
2003-04-01	49.8178132849386
2003-07-01	50.0907279816783
2003-10-01	50.4719612306625
2004-01-01	50.2502572234213
2004-04-01	50.1755830598041
2004-07-01	50.4736917628504
2004-10-01	50.6677315569899
2005-01-01	52.3886412660076
2005-04-01	52.5587948249208
2005-07-01	52.8416590518724
2005-10-01	52.3526875997553
2006-01-01	52.1711919252363
2006-04-01	52.1328822360539
2006-07-01	52.1928951668225
2006-10-01	52.2372457247263
2007-01-01	52.4504310490440
2007-04-01	52.7116247842035
2007-07-01	51.7550179037513
2007-10-01	51.7231276416286
2008-01-01	51.8626645884116
2008-04-01	51.2517652840022
2008-07-01	51.8695484000476
2008-10-01	50.9010659990236
2009-01-01	49.8439048667454
2009-04-01	48.8170613888619
2009-07-01	47.4920087068900
2009-10-01	46.6011558410162
2010-01-01	45.7208701158882
2010-04-01	45.9168558034556
2010-07-01	44.0890565468366
2010-10-01	44.1438556910094
2011-01-01	43.3184007539686
2011-04-01	42.6885965971119
2011-07-01	42.8544850742070
2011-10-01	41.3786410692172
2012-01-01	40.7833477086044
2012-04-01	40.5090770735253
2012-07-01	40.2644516521352
2012-10-01	39.8376565569740
2013-01-01	40.3529694794012
2013-04-01	39.6644075775712
2013-07-01	39.1792416258930
2013-10-01	39.1402914936362
2014-01-01	38.0157689460158
2014-04-01	37.3329871902727
2014-07-01	37.2233440126045
2014-10-01	36.8303252815582
2015-01-01	36.4534834364618
2015-04-01	35.9955020633425
2015-07-01	36.2979738753974
2015-10-01	35.9281869863512
2016-01-01	35.1015239679188
2016-04-01	35.2957766514414
2016-07-01	34.1409477973310
2016-10-01	34.3556092672589
2017-01-01	34.9853639700519
2017-04-01	34.6375889033763
2017-07-01	35.8388737177330
2017-10-01	34.8982664101072
2018-01-01	35.0166808501950
2018-04-01	35.3261962100481
2018-07-01	35.1840056607641