Quarter	US Dollars, sum over component sub-periods
2002-01-01	1054585091.68818000
2002-04-01	964675663.38880900
2002-07-01	-125912099.84199600
2002-10-01	111051835.65378600
2003-01-01	123455212.24141799
2003-04-01	-114725045.82899301
2003-07-01	1026599204.20222010
2003-10-01	785335495.12573800
2004-01-01	1222646535.92083000
2004-04-01	89188219.91544560
2004-07-01	859542118.65435200
2004-10-01	1303174715.34710980
2005-01-01	2696924349.85207000
2005-04-01	429152235.30924696
2005-07-01	1445108560.30681000
2005-10-01	805196307.84734390
2006-01-01	974347094.75424600
2006-04-01	231266848.34928900
2006-07-01	1712988389.26488000
2006-10-01	988066466.21736000
2007-01-01	963669751.14308400
2007-04-01	895124256.02692000
2007-07-01	1341878508.40149000
2007-10-01	1593978223.72920000
2008-01-01	1330408212.10096000
2008-04-01	1343369959.17354000
2008-07-01	1178614504.54446000
2008-10-01	136590621.19610100
2009-01-01	1424659802.59384000
2009-04-01	1769007917.92905020
2009-07-01	550713138.79067900
2009-10-01	-782641634.87994990
2010-01-01	1393454775.48358000
2010-04-01	428221341.48186200
2010-07-01	948580379.87076600
2010-10-01	527997639.44276506
2011-01-01	1108819873.51419000
2011-04-01	351188510.54550000
2011-07-01	513954961.36343694
2011-10-01	1473976453.84528000
2012-01-01	2519220306.62035040
2012-04-01	-1976106106.97427000
2012-07-01	1833224671.60154990
2012-10-01	311472859.68971497
2013-01-01	-1893474889.28288000
2013-04-01	246835863.20257998
2013-07-01	1344475439.78599000
2013-10-01	2974033423.29662040
2014-01-01	-1308820255.17948000
2014-04-01	1568718860.40369000
2014-07-01	2186787308.19122000
2014-10-01	730456105.36982700
2015-01-01	801519448.35976600
2015-04-01	-2460956215.61601000
2015-07-01	3382895266.40767000
2015-10-01	892927182.64349010
2016-01-01	459589866.20899796
2016-04-01	-374900182.19100100
2016-07-01	2841010465.21410000
2016-10-01	-598017606.96681000
2017-01-01	2557337037.86683000
2017-04-01	-442110333.93725103
2017-07-01	409897219.10373400
2017-10-01	195467915.02105500
2018-01-01	3039014348.31678000
2018-04-01	-1122117361.35281000