Quarter	US Dollars, sum over component sub-periods
2005-01-01	55444913302.518200
2005-04-01	17191796060.654800
2005-07-01	35235624696.298996
2005-10-01	35847285493.413700
2006-01-01	47918809598.146700
2006-04-01	6210434932.543281
2006-07-01	36260043976.533104
2006-10-01	48044600959.509000
2007-01-01	34013797210.070103
2007-04-01	-24658769558.894897
2007-07-01	33661906935.355904
2007-10-01	42749116768.254100
2008-01-01	56991108675.223900
2008-04-01	-44776617747.048700
2008-07-01	12251523561.127400
2008-10-01	4303080012.272520
2009-01-01	40610008221.639700
2009-04-01	-3503160661.460340
2009-07-01	56213961527.134900
2009-10-01	67041083024.094696
2010-01-01	83045874979.362700
2010-04-01	43123653483.808395
2010-07-01	81385342089.010790
2010-10-01	83917416020.263000
2011-01-01	87686925766.035900
2011-04-01	51234320050.418000
2011-07-01	99122967694.598200
2011-10-01	119826323020.832000
2012-01-01	93362765761.762300
2012-04-01	60464555919.750400
2012-07-01	93970228946.855700
2012-10-01	96260855581.128100
2013-01-01	74330429316.028400
2013-04-01	50189458354.587100
2013-07-01	90484600266.835300
2013-10-01	98265104372.264800
2014-01-01	80798252920.663700
2014-04-01	21612516056.326897
2014-07-01	87786835692.069490
2014-10-01	113392844778.166000
2015-01-01	80268415105.385400
2015-04-01	24486511948.580800
2015-07-01	73202571299.527310
2015-10-01	75464216059.174000
2016-01-01	64882229480.986000
2016-04-01	11206669756.685100
2016-07-01	69415612194.799700
2016-10-01	99849682481.444400
2017-01-01	87659431481.933500
2017-04-01	20215621122.984100
2017-07-01	104555775571.285000
2017-10-01	92240341252.016710
2018-01-01	91918980811.183300
2018-04-01	40409231351.450900