Quarter	Percent, Seasonally Adjusted
1999-01-01	60.9639181622012
1999-04-01	61.1372688242844
1999-07-01	61.2556678273297
1999-10-01	61.3529014263593
2000-01-01	61.3426525540214
2000-04-01	61.5570330228407
2000-07-01	61.7369165199816
2000-10-01	61.9929919480438
2001-01-01	61.3111837076101
2001-04-01	60.9254196837783
2001-07-01	60.8324687239998
2001-10-01	60.6532160318963
2002-01-01	60.7501152291209
2002-04-01	60.7593110025393
2002-07-01	60.8502521441430
2002-10-01	60.9559286074538
2003-01-01	61.0566270007790
2003-04-01	61.4975503883770
2003-07-01	61.5129180099495
2003-10-01	61.4043734270022
2004-01-01	61.4430433361631
2004-04-01	61.1565323280918
2004-07-01	61.0803577869883
2004-10-01	61.2606297313919
2005-01-01	61.4912774466998
2005-04-01	61.4949258519204
2005-07-01	61.9108395574367
2005-10-01	62.0644551187160
2006-01-01	62.2308017634952
2006-04-01	62.5609389450352
2006-07-01	62.4173638977742
2006-10-01	62.7781112832540
2007-01-01	62.6049356315498
2007-04-01	62.3885005484775
2007-07-01	62.1507588177322
2007-10-01	61.9111354339952
2008-01-01	61.6262724330382
2008-04-01	61.5845310307270
2008-07-01	61.8523292322976
2008-10-01	61.4126521230442
2009-01-01	61.4167443224382
2009-04-01	61.5052197195978
2009-07-01	61.2295948146603
2009-10-01	61.3909198335752
2010-01-01	61.3064118403200
2010-04-01	61.3395659770949
2010-07-01	61.3260793885934
2010-10-01	61.4674537484776
2011-01-01	61.5943073320674
2011-04-01	61.7028808864782
2011-07-01	62.0642211697762
2011-10-01	62.1970341914818
2012-01-01	62.3883845176454
2012-04-01	62.7267924515717
2012-07-01	62.9255145605922
2012-10-01	63.3980735657978
2013-01-01	62.8959703947387
2013-04-01	63.7627540436608
2013-07-01	64.2834723995854
2013-10-01	64.5864887691921
2014-01-01	65.3947105246741
2014-04-01	65.5134634072170
2014-07-01	65.9540363948732
2014-10-01	66.1205635116332
2015-01-01	66.4950114497791
2015-04-01	66.9373300790728
2015-07-01	67.4300429266890
2015-10-01	67.7703881361017
2016-01-01	68.1621033596620
2016-04-01	68.4712907995064
2016-07-01	68.6113525110824
2016-10-01	68.9871935799036
2017-01-01	69.0544407764666
2017-04-01	69.5619727045420
2017-07-01	69.7071532802567
2017-10-01	69.9379795192649
2018-01-01	70.1814892927534
2018-04-01	70.1164960319099