Quarter	Percent, Seasonally Adjusted
1999-01-01	67.0062567973587
1999-04-01	67.6720004058494
1999-07-01	66.4337363805804
1999-10-01	67.2296366450381
2000-01-01	70.0286687669126
2000-04-01	66.3821250059977
2000-07-01	67.8430325441858
2000-10-01	68.0773458585171
2001-01-01	68.7447198723608
2001-04-01	68.7614344178201
2001-07-01	67.2593640239065
2001-10-01	68.7554046797234
2002-01-01	67.4922450755392
2002-04-01	68.4728463042732
2002-07-01	67.3079641314084
2002-10-01	67.4867994891922
2003-01-01	67.3967612102656
2003-04-01	69.1328281308479
2003-07-01	68.4546048889402
2003-10-01	68.0277939383646
2004-01-01	67.0912259322807
2004-04-01	66.7848088061510
2004-07-01	66.8283751218516
2004-10-01	68.2364152830178
2005-01-01	67.3090830696767
2005-04-01	67.2793143354714
2005-07-01	69.4892034633357
2005-10-01	67.2289628632623
2006-01-01	68.1601541161458
2006-04-01	69.0258901234756
2006-07-01	67.2729188672733
2006-10-01	68.0015343653620
2007-01-01	68.6160531580885
2007-04-01	67.0383949298604
2007-07-01	69.2820309499447
2007-10-01	68.7796187478606
2008-01-01	69.3952956111687
2008-04-01	70.0867843535830
2008-07-01	68.8171436724264
2008-10-01	69.2374740834572
2009-01-01	70.5597640544717
2009-04-01	69.2317659307068
2009-07-01	70.2178523471297
2009-10-01	70.1541525133664
2010-01-01	68.7495219578395
2010-04-01	71.1514454707984
2010-07-01	70.3948435926727
2010-10-01	70.8084128004159
2011-01-01	69.3867467265525
2011-04-01	69.9272978773023
2011-07-01	70.5452486234929
2011-10-01	71.0132455855188
2012-01-01	71.8913966049058
2012-04-01	73.4144885793684
2012-07-01	72.0118106096066
2012-10-01	71.0491976258003
2013-01-01	72.0634690731434
2013-04-01	70.9137173639511
2013-07-01	71.5256918588414
2013-10-01	72.5207863300999
2014-01-01	72.1961344980206
2014-04-01	71.0544155877923
2014-07-01	71.9944567190608
2014-10-01	72.4396997264666
2015-01-01	72.0101852899226
2015-04-01	72.5162034060577
2015-07-01	73.8790355875525
2015-10-01	73.1199544853195
2016-01-01	72.4636144854984
2016-04-01	73.2176643118999
2016-07-01	74.6596282933251
2016-10-01	75.0397570390276
2017-01-01	75.6568810062177
2017-04-01	75.3673306361151
2017-07-01	73.7147666420924
2017-10-01	73.4482710042975
2018-01-01	72.4457165356004
2018-04-01	73.0279654733909