Quarter	Percent, Seasonally Adjusted
1999-01-01	65.9662128171165
1999-04-01	64.5326623196113
1999-07-01	63.7189507047987
1999-10-01	63.0612923135341
2000-01-01	62.4095312815520
2000-04-01	62.0776334292683
2000-07-01	62.2370189241819
2000-10-01	62.0939528405414
2001-01-01	61.7965897348075
2001-04-01	62.1775287598923
2001-07-01	62.0443283326400
2001-10-01	62.1033623887962
2002-01-01	62.4558288334496
2002-04-01	62.0707380062296
2002-07-01	62.1965534042750
2002-10-01	62.8039205249487
2003-01-01	62.9412016527178
2003-04-01	63.6276350085661
2003-07-01	63.6359219025476
2003-10-01	63.1194513812546
2004-01-01	62.7114116321829
2004-04-01	63.0549412778554
2004-07-01	63.4288181767908
2004-10-01	63.5478860325220
2005-01-01	63.9106845097841
2005-04-01	64.2170454184128
2005-07-01	64.8080391799208
2005-10-01	65.5692445358450
2006-01-01	66.4547844600762
2006-04-01	67.0001896748492
2006-07-01	67.1797659646709
2006-10-01	67.3791068475588
2007-01-01	67.7537134503164
2007-04-01	68.0548775745200
2007-07-01	68.6322818284856
2007-10-01	69.1767705413382
2008-01-01	69.3639300918835
2008-04-01	69.3685492450874
2008-07-01	70.5837556871488
2008-10-01	70.5407109685065
2009-01-01	69.1266470807560
2009-04-01	68.0398661682440
2009-07-01	67.1280500054771
2009-10-01	65.9766041789644
2010-01-01	64.9228555729491
2010-04-01	65.1925113095876
2010-07-01	65.1198562288847
2010-10-01	65.6165784047950
2011-01-01	65.7715479763282
2011-04-01	66.1744769509761
2011-07-01	66.1713479954398
2011-10-01	66.2848561704650
2012-01-01	66.7325299513212
2012-04-01	66.5721377510957
2012-07-01	66.7980206294668
2012-10-01	66.5705274188334
2013-01-01	66.8861448655456
2013-04-01	66.4680788224130
2013-07-01	66.1927489555165
2013-10-01	65.9880160778797
2014-01-01	66.6680930318940
2014-04-01	67.1903662566524
2014-07-01	67.9995904409502
2014-10-01	68.7023426677074
2015-01-01	68.7504505349642
2015-04-01	69.1783741648643
2015-07-01	69.6418662694873
2015-10-01	70.2320749395980
2016-01-01	70.7235967387392
2016-04-01	71.3852355657304
2016-07-01	71.5579005906153
2016-10-01	71.7612900372305
2017-01-01	71.7490589648026
2017-04-01	71.8258754656847
2017-07-01	72.0850647997280
2017-10-01	72.3397447230253
2018-01-01	73.0891265874926
2018-04-01	73.4556155247864