Quarter	Percent, Seasonally Adjusted
1999-04-01	64.8153641189403
1999-07-01	65.2866241335620
1999-10-01	65.1834962498671
2000-01-01	65.1854227604730
2000-04-01	65.1920401398859
2000-07-01	64.8286938468074
2000-10-01	64.1883991683304
2001-01-01	64.1862989230803
2001-04-01	63.7248278585492
2001-07-01	64.2266907724136
2001-10-01	64.6502128694973
2002-01-01	64.0525430818934
2002-04-01	64.2372702244694
2002-07-01	63.5986572133781
2002-10-01	63.5946057611142
2003-01-01	63.5669878262596
2003-04-01	63.0179102452430
2003-07-01	62.9081862135656
2003-10-01	63.2613042054838
2004-01-01	63.4695930413145
2004-04-01	63.3237628109045
2004-07-01	62.9667526653944
2004-10-01	62.9116181168976
2005-01-01	63.1939503287401
2005-04-01	62.0088007694863
2005-07-01	61.7447844324635
2005-10-01	61.9206432732380
2006-01-01	61.7985267586119
2006-04-01	62.5734060656410
2006-07-01	62.8116595328235
2006-10-01	62.0372872000302
2007-01-01	61.7522556799008
2007-04-01	61.3251713699058
2007-07-01	61.1956007840799
2007-10-01	61.2979636962404
2008-01-01	61.2566020770743
2008-04-01	61.3593771510419
2008-07-01	61.3417405960078
2008-10-01	61.0065369968667
2009-01-01	60.3373505254255
2009-04-01	59.6892552017373
2009-07-01	58.8148615203391
2009-10-01	58.0362712401261
2010-01-01	58.1315765809557
2010-04-01	58.6444207961494
2010-07-01	58.7903051974954
2010-10-01	58.2079482381419
2011-01-01	57.8878368404743
2011-04-01	58.3401046338279
2011-07-01	58.2161963105641
2011-10-01	58.3990301164660
2012-01-01	58.3051250312454
2012-04-01	58.7780903189226
2012-07-01	58.3967501323782
2012-10-01	59.0547799320737
2013-01-01	58.4683977376828
2013-04-01	57.9796884985642
2013-07-01	58.6466099147047
2013-10-01	58.1783848209560
2014-01-01	57.6494733729484
2014-04-01	57.7926096707509
2014-07-01	57.8537498341653
2014-10-01	57.9180052318916
2015-01-01	58.3291429997723
2015-04-01	58.5349509667376
2015-07-01	58.7475510499877
2015-10-01	58.5039336187068
2016-01-01	58.6008307091404
2016-04-01	58.6615665396601
2016-07-01	58.2769736077748
2016-10-01	58.1811863782798
2017-01-01	58.1153176441516
2017-04-01	57.8477782137691
2017-07-01	57.0969519310076
2017-10-01	57.4464402703324
2018-01-01	57.7522115241602
2018-04-01	57.1280054030488