Quarter	Percent, Seasonally Adjusted
1998-01-01	57.1695859230245
1998-04-01	57.7142140032165
1998-07-01	58.3744738491759
1998-10-01	58.2591453882956
1999-01-01	59.0041398632114
1999-04-01	57.6347152899263
1999-07-01	57.3399734315712
1999-10-01	57.7897556441236
2000-01-01	57.6139044692984
2000-04-01	57.7431863757731
2000-07-01	57.5012574017148
2000-10-01	56.3898956896243
2001-01-01	58.0050299694735
2001-04-01	57.3317956330407
2001-07-01	57.2500891832761
2001-10-01	57.9802445635702
2002-01-01	57.1505284352357
2002-04-01	57.3700677464337
2002-07-01	58.6271121016378
2002-10-01	59.4162917640587
2003-01-01	59.7773250419639
2003-04-01	60.1921043266032
2003-07-01	60.6444315381164
2003-10-01	61.7158231791389
2004-01-01	58.3275538271351
2004-04-01	58.7520596130404
2004-07-01	58.9788043076939
2004-10-01	59.4675493073884
2005-01-01	60.3051334851427
2005-04-01	60.7954619890576
2005-07-01	61.3051686135443
2005-10-01	60.8972362699942
2006-01-01	61.2314422478089
2006-04-01	61.2771602603185
2006-07-01	60.9930942055766
2006-10-01	60.7489272952203
2007-01-01	60.3355453132896
2007-04-01	60.3899853787098
2007-07-01	61.4321201343424
2007-10-01	61.2548166381440
2008-01-01	61.2038030790388
2008-04-01	60.9539919456558
2008-07-01	60.8024270862379
2008-10-01	60.8820028917971
2009-01-01	59.8199467405852
2009-04-01	60.2261699782624
2009-07-01	60.4295032640848
2009-10-01	60.3477728286069
2010-01-01	60.7009854161719
2010-04-01	60.1587911163472
2010-07-01	60.0715553066565
2010-10-01	59.9492286074653
2011-01-01	59.0782723418198
2011-04-01	58.4559635134844
2011-07-01	56.0515677955799
2011-10-01	55.4903720731919
2012-01-01	55.2106545323924
2012-04-01	55.3918518800608
2012-07-01	54.8193478889641
2012-10-01	55.4944518743536
2013-01-01	54.5669826981096
2013-04-01	55.5084421457290
2013-07-01	55.4832508359821
2013-10-01	54.3365500676767
2014-01-01	54.4483049277655
2014-04-01	53.6973022659327
2014-07-01	53.1549443645662
2014-10-01	52.3076831011772
2015-01-01	53.2968504199292
2015-04-01	54.2437479585360
2015-07-01	55.3449142982402
2015-10-01	56.5722438285775
2016-01-01	56.7300081174950
2016-04-01	56.4235088471370
2016-07-01	57.7702019284363
2016-10-01	58.1454671179468
2017-01-01	58.7956702987348
2017-04-01	59.6092381101923
2017-07-01	60.6533456531682
2017-10-01	60.3359612818097
2018-01-01	60.2476042157909
2018-04-01	61.0589144900314