Quarter	Percent, Seasonally Adjusted
1999-04-01	61.1223083707983
1999-07-01	61.8569620946002
1999-10-01	61.5058607036320
2000-01-01	62.1039142136462
2000-04-01	61.7120946190979
2000-07-01	61.8215245987600
2000-10-01	61.1220456392262
2001-01-01	60.4555513553465
2001-04-01	60.0450897456331
2001-07-01	60.0004427280128
2001-10-01	61.2666862203524
2002-01-01	60.6700376367888
2002-04-01	61.0078923675984
2002-07-01	60.9497563440052
2002-10-01	60.4501319735265
2003-01-01	60.2760958944304
2003-04-01	60.0057003376919
2003-07-01	59.6337270569705
2003-10-01	60.3658009160268
2004-01-01	60.9416505628088
2004-04-01	60.7589786733704
2004-07-01	60.1917330090302
2004-10-01	60.2948866497433
2005-01-01	60.5093978170980
2005-04-01	58.9289747538448
2005-07-01	58.8104796559198
2005-10-01	58.6527216706920
2006-01-01	59.1398823836839
2006-04-01	60.2340356496028
2006-07-01	59.8388427590701
2006-10-01	59.6089212987032
2007-01-01	58.7062736712209
2007-04-01	58.4523190223895
2007-07-01	58.7975095047032
2007-10-01	58.4684091078046
2008-01-01	58.2374081330348
2008-04-01	58.5955877739000
2008-07-01	58.0724082447946
2008-10-01	57.7727597571440
2009-01-01	57.9312029212604
2009-04-01	57.2359219562298
2009-07-01	56.9056410487771
2009-10-01	56.4194354698785
2010-01-01	56.1014158736183
2010-04-01	56.3631744003714
2010-07-01	56.1295785584774
2010-10-01	55.1125182735629
2011-01-01	55.3745891588347
2011-04-01	55.8401116050582
2011-07-01	55.6006802382042
2011-10-01	55.8135422664323
2012-01-01	55.4826980060437
2012-04-01	56.0030197017498
2012-07-01	56.2203161552032
2012-10-01	57.4731039279901
2013-01-01	56.8893918763830
2013-04-01	55.8629647504733
2013-07-01	56.5812725452580
2013-10-01	56.1777620922718
2014-01-01	55.5038315517646
2014-04-01	55.9508026805498
2014-07-01	56.4600239263519
2014-10-01	56.3669114657475
2015-01-01	56.7091963538072
2015-04-01	57.4878393062714
2015-07-01	57.1344439566896
2015-10-01	56.7652777923997
2016-01-01	57.1893810174295
2016-04-01	57.8696243257312
2016-07-01	57.5773298284007
2016-10-01	57.4545545347527
2017-01-01	57.5417070637650
2017-04-01	56.9774846486218
2017-07-01	56.4480682060280
2017-10-01	56.6135505285326
2018-01-01	56.5818447093603
2018-04-01	55.7203756986551