Quarter	Percent, Seasonally Adjusted
1999-04-01	39.8078792976746
1999-07-01	39.6508243756352
1999-10-01	39.5001010340654
2000-01-01	39.4302515554075
2000-04-01	39.3792475806916
2000-07-01	39.1372419083731
2000-10-01	39.4351194684401
2001-01-01	39.4901636127074
2001-04-01	39.5434481486613
2001-07-01	39.5334444968444
2001-10-01	39.3087382802800
2002-01-01	39.3191926619537
2002-04-01	38.9885667871024
2002-07-01	38.9582339495362
2002-10-01	39.0242656843923
2003-01-01	39.1243103181439
2003-04-01	39.1057989823192
2003-07-01	39.0454628124739
2003-10-01	38.9163222628183
2004-01-01	38.7695241827113
2004-04-01	38.7039069083149
2004-07-01	38.8660470093264
2004-10-01	38.6619804299699
2005-01-01	38.3990720733330
2005-04-01	38.5275276976882
2005-07-01	38.3056907396518
2005-10-01	38.2500337848213
2006-01-01	37.9048639578617
2006-04-01	37.7371142421364
2006-07-01	37.7947071716365
2006-10-01	37.8332491395134
2007-01-01	38.1777126032008
2007-04-01	38.2188670499105
2007-07-01	38.0410783217701
2007-10-01	37.8822667844037
2008-01-01	37.8828380199515
2008-04-01	37.7368426806721
2008-07-01	37.7082970387372
2008-10-01	37.6832326294432
2009-01-01	37.5312542469195
2009-04-01	37.6102797547476
2009-07-01	37.5797878559270
2009-10-01	37.4629969482391
2010-01-01	37.7150513217481
2010-04-01	37.6289130601857
2010-07-01	37.5198784612391
2010-10-01	37.7001986583067
2011-01-01	37.4635422439442
2011-04-01	37.4861031356953
2011-07-01	37.5046086515740
2011-10-01	37.4239524303852
2012-01-01	37.4830662785677
2012-04-01	37.3883180560402
2012-07-01	37.2128402467913
2012-10-01	36.8962035680254
2013-01-01	36.8924977420910
2013-04-01	36.8801042561319
2013-07-01	36.7666014405074
2013-10-01	36.7076404345612
2014-01-01	36.6227750447927
2014-04-01	36.4993850250620
2014-07-01	36.4969247292721
2014-10-01	36.4293200382741
2015-01-01	36.3685692947136
2015-04-01	36.3390031951259
2015-07-01	36.2696047755379
2015-10-01	36.2443028503672
2016-01-01	36.2270365172028
2016-04-01	35.9742948866794
2016-07-01	35.8462742293362
2016-10-01	35.7466490050424
2017-01-01	35.7054547451400
2017-04-01	35.5677911542156
2017-07-01	35.5156926056107
2017-10-01	35.4302293976709
2018-01-01	35.2578571882408
2018-04-01	35.3787246566201