Quarter	Percent, Seasonally Adjusted
1999-01-01	76.0602600343479
1999-04-01	76.2207217228210
1999-07-01	76.7004219663640
1999-10-01	75.4596013994586
2000-01-01	76.6647235818494
2000-04-01	75.9127248189667
2000-07-01	74.5415852265603
2000-10-01	75.3405732127934
2001-01-01	75.3512214575933
2001-04-01	75.0403066077963
2001-07-01	76.2150893207602
2001-10-01	76.8821410909560
2002-01-01	75.5904372579045
2002-04-01	75.9366209755778
2002-07-01	74.8238225001379
2002-10-01	75.4713001555667
2003-01-01	74.2922115974980
2003-04-01	74.8319152674612
2003-07-01	75.6640188676535
2003-10-01	75.6843520966042
2004-01-01	75.4431714232018
2004-04-01	76.1551189720460
2004-07-01	76.7696143429247
2004-10-01	76.2744829607994
2005-01-01	75.9973236979063
2005-04-01	75.0904253080486
2005-07-01	75.6138222399498
2005-10-01	77.0136766890574
2006-01-01	77.3097744915790
2006-04-01	76.7265037983591
2006-07-01	76.9421648006378
2006-10-01	76.8628549700274
2007-01-01	76.9615118980096
2007-04-01	76.3932090649344
2007-07-01	76.0682775495818
2007-10-01	76.1765500892506
2008-01-01	76.4532458248456
2008-04-01	76.8642961837704
2008-07-01	77.0104803884683
2008-10-01	77.5055486970470
2009-01-01	77.0437350020846
2009-04-01	77.3529452974156
2009-07-01	76.9348386647595
2009-10-01	75.8910578072704
2010-01-01	76.0048703095341
2010-04-01	76.4754841827696
2010-07-01	76.3080202198772
2010-10-01	75.3841015827200
2011-01-01	76.1172651945735
2011-04-01	76.1022518258623
2011-07-01	76.3454315435104
2011-10-01	76.0172549159489
2012-01-01	76.2877245691505
2012-04-01	76.4837526843022
2012-07-01	75.4896055267624
2012-10-01	74.9098456546135
2013-01-01	75.4467204560593
2013-04-01	76.0715493749211
2013-07-01	75.7974030886169
2013-10-01	75.1707505157156
2014-01-01	74.5644256687183
2014-04-01	74.6351520066040
2014-07-01	74.9250136435947
2014-10-01	75.8841872394679
2015-01-01	75.8103831779140
2015-04-01	75.0040627411129
2015-07-01	74.8010487016421
2015-10-01	75.4933775010428
2016-01-01	77.4953123463118
2016-04-01	77.5693087167534
2016-07-01	76.8977374722954
2016-10-01	76.9058906059522
2017-01-01	76.1501517163444
2017-04-01	75.6608600800942
2017-07-01	76.5213346275670
2017-10-01	76.0432933161294
2018-01-01	76.7209635884779
2018-04-01	76.8997258798690