Quarter	Percent, Seasonally Adjusted
1999-01-01	53.7825195147594
1999-04-01	53.4272297340386
1999-07-01	53.2567073273568
1999-10-01	53.0757375882588
2000-01-01	52.9930436031861
2000-04-01	53.0565142480950
2000-07-01	53.1009299290249
2000-10-01	53.0898468614984
2001-01-01	53.2689795663868
2001-04-01	53.2875693211527
2001-07-01	53.2798178068290
2001-10-01	53.5211022627641
2002-01-01	53.7873696161114
2002-04-01	54.0822291935368
2002-07-01	54.1522931706588
2002-10-01	54.1818514392034
2003-01-01	54.0799346660869
2003-04-01	53.8421635591300
2003-07-01	53.5304534483865
2003-10-01	53.3975619760522
2004-01-01	53.2159380309043
2004-04-01	53.2652289117341
2004-07-01	53.3953694670754
2004-10-01	53.6463102174529
2005-01-01	53.8805719955782
2005-04-01	54.2330601873385
2005-07-01	54.4540657334747
2005-10-01	54.4179409991815
2006-01-01	54.5085876795820
2006-04-01	54.6665413971969
2006-07-01	54.7048095693128
2006-10-01	54.9306558905953
2007-01-01	55.3209307303374
2007-04-01	55.4500653226154
2007-07-01	55.7772146036829
2007-10-01	55.9166475610920
2008-01-01	56.0815241474178
2008-04-01	56.0931818228217
2008-07-01	56.0829530758130
2008-10-01	55.9880335197808
2009-01-01	55.5347096603189
2009-04-01	54.9661422624601
2009-07-01	54.3981838528359
2009-10-01	54.1720631546389
2010-01-01	54.0418643514593
2010-04-01	54.1983824254940
2010-07-01	54.3072704689598
2010-10-01	54.1375736267925
2011-01-01	53.8595654221984
2011-04-01	53.7742958568664
2011-07-01	53.5881217219772
2011-10-01	53.5048232451140
2012-01-01	53.7924672926404