Quarter	Percent, Seasonally Adjusted
2001-01-01	59.4102210195468
2001-04-01	59.4360417245205
2001-07-01	59.4677750442484
2001-10-01	59.4797960047190
2002-01-01	59.3662476207062
2002-04-01	59.2075152682470
2002-07-01	59.0892605565796
2002-10-01	59.0747705252785
2003-01-01	58.9202743773379
2003-04-01	58.9095572651443
2003-07-01	58.5859050224243
2003-10-01	58.4129431633042
2004-01-01	58.2259075409700
2004-04-01	57.9744117520025
2004-07-01	57.9927435164452
2004-10-01	57.8999541024963
2005-01-01	57.7449948543422
2005-04-01	58.2238458853572
2005-07-01	58.1073486781916
2005-10-01	58.5604110351802
2006-01-01	58.5510885555748
2006-04-01	58.6527772804796
2006-07-01	59.0663193290720
2006-10-01	59.2271738914154
2007-01-01	59.4992447886466
2007-04-01	59.6071607832433
2007-07-01	59.9411743585629
2007-10-01	60.0021380687275
2008-01-01	60.1527899460713
2008-04-01	60.1690332227806
2008-07-01	59.9571030892619
2008-10-01	59.5161735422146
2009-01-01	58.7398798148134
2009-04-01	58.2349023367736
2009-07-01	57.5894458586601
2009-10-01	57.5357847393748
2010-01-01	57.5183033803490
2010-04-01	57.7780997085103
2010-07-01	57.9392769729965
2010-10-01	58.1166524669582
2011-01-01	58.5973419203948
2011-04-01	58.7295218714872
2011-07-01	58.7805342634134
2011-10-01	58.8084269625612
2012-01-01	58.7728705521907
2012-04-01	58.8390592674057
2012-07-01	58.8174767227627
2012-10-01	58.8411997680344
2013-01-01	58.9484354002716
2013-04-01	59.0218839920626
2013-07-01	59.1622239158466
2013-10-01	59.2980751441309
2014-01-01	59.2840503247105
2014-04-01	59.4728646501798
2014-07-01	59.9079010486225
2014-10-01	59.6823967400425
2015-01-01	59.8443940477945
2015-04-01	59.8158462380811
2015-07-01	60.1239469700103
2015-10-01	60.2410089020163
2016-01-01	60.2181927500899
2016-04-01	60.4960119105292
2016-07-01	60.3301148225978
2016-10-01	60.6471267848926
2017-01-01	60.9657833823540
2017-04-01	61.0654579370438
2017-07-01	61.3514625995054
2017-10-01	61.3999362953072
2018-01-01	61.5761297554978
2018-04-01	61.6515881005350