Quarter	US Dollars, sum over component sub-periods
2008-01-01	809667858019.016000
2008-04-01	-572931420074.495000
2008-07-01	11456682808.668800
2008-10-01	-1380180124052.369900
2009-01-01	-482558737048.462000
2009-04-01	-376539113604.401000
2009-07-01	104864690596.800000
2009-10-01	-204221654243.469000
2010-01-01	222565861344.693000
2010-04-01	116060305292.213000
2010-07-01	454966444974.277950
2010-10-01	56882297303.476295
2011-01-01	632781510593.795000
2011-04-01	73755671770.620700
2011-07-01	317499372024.420000
2011-10-01	-140879571427.460000
2012-01-01	193084186032.826000
2012-04-01	-293514893597.360960
2012-07-01	62184877596.153200
2012-10-01	-109938695907.755000
2013-01-01	269347718909.592000
2013-04-01	20724629697.942000
2013-07-01	-173644897444.049000
2013-10-01	277795731562.319000
2014-01-01	393932410438.712950
2014-04-01	372724214275.463000
2014-07-01	162943964030.276000
2014-10-01	-136267744327.194000
2015-01-01	12222544094.667600
2015-04-01	-396378766766.179000
2015-07-01	71991047083.360090
2015-10-01	-414906341845.081000
2016-01-01	256946532349.354980
2016-04-01	499379085155.125000
2016-07-01	117001098733.431000
2016-10-01	-135638340531.594010
2017-01-01	415763569480.023000
2017-04-01	190170047047.898000
2017-07-01	344303682242.705000
2017-10-01	19977107598.014603