Quarter	Percent, Seasonally Adjusted
1998-01-01	65.7630188859078
1998-04-01	65.9946679917075
1998-07-01	66.0167758511820
1998-10-01	66.0425488446032
1999-01-01	66.0183610052374
1999-04-01	66.0375007962042
1999-07-01	66.0974955769694
1999-10-01	66.0332766108443
2000-01-01	66.0767898341212
2000-04-01	66.1685133126085
2000-07-01	66.2707280654240
2000-10-01	66.3754850120026
2001-01-01	66.2389233426022
2001-04-01	66.0216799519717
2001-07-01	66.2169232314945
2001-10-01	66.1741258698509
2002-01-01	66.3209951388577
2002-04-01	66.3906587859135
2002-07-01	66.4673347600299
2002-10-01	66.4839799759971
2003-01-01	66.6582845748146
2003-04-01	66.6341307294404
2003-07-01	66.7648555508746
2003-10-01	66.8586823372477
2004-01-01	66.4231276789392
2004-04-01	66.7519862648085
2004-07-01	66.6385913945926
2004-10-01	66.5827520400311
2005-01-01	66.4052962044934
2005-04-01	66.2073900783108
2005-07-01	66.0465123641898
2005-10-01	66.1588592892280
2006-01-01	66.2790395823914
2006-04-01	66.2954721537112
2006-07-01	66.0177111801684
2006-10-01	65.9626911893470
2007-01-01	65.7044495028320
2007-04-01	65.7380360878238
2007-07-01	66.0323386954161
2007-10-01	65.9856828256810
2008-01-01	65.9652422900784
2008-04-01	66.1848517992348
2008-07-01	65.8688943950888
2008-10-01	65.7062081318536
2009-01-01	65.4212439619681
2009-04-01	65.1080615307101
2009-07-01	65.2554707256353
2009-10-01	64.9847917736699
2010-01-01	65.0974503658234
2010-04-01	64.9828046361597
2010-07-01	64.4753015594463
2010-10-01	64.6489661437906
2011-01-01	64.5449339690859
2011-04-01	64.3584573964982
2011-07-01	64.6153233419129
2011-10-01	64.7800343023672
2012-01-01	65.1366346768687
2012-04-01	65.4448412702581
2012-07-01	65.2530472194147
2012-10-01	65.2924777581716
2013-01-01	64.9209914435098
2013-04-01	64.7669394719820
2013-07-01	64.7391233477908
2013-10-01	64.6570663062334
2014-01-01	64.9362040492682
2014-04-01	64.7931705015954
2014-07-01	65.0638197287886
2014-10-01	65.1578205612761
2015-01-01	65.1271739439062
2015-04-01	65.3894617423934
2015-07-01	65.4920687962461
2015-10-01	65.5727790114200
2016-01-01	65.6244707944314
2016-04-01	66.0710997942692
2016-07-01	65.9887646469131
2016-10-01	66.2362871441656
2017-01-01	66.3883025151760
2017-04-01	66.0693271650851
2017-07-01	66.3496732648274
2017-10-01	66.3144631314896
2018-01-01	66.3476515099081
2018-04-01	66.7647623140067