Quarter	US Dollars, sum over component sub-periods
2002-01-01	1314067375.262330000
2002-04-01	-348533914.608540000
2002-07-01	734815145.171651000
2002-10-01	116054170.593146000
2003-01-01	-4281212055.815450000
2003-04-01	-90871323.428905400
2003-07-01	18010512.354424800
2003-10-01	-424795108.727104000
2004-01-01	-1180141441.625020000
2004-04-01	-389294527.468769000
2004-07-01	-189514976.374715000
2004-10-01	-1540233336.528540000
2005-01-01	-283059115.436369000
2005-04-01	47823416.251470400
2005-07-01	189022638.689920000
2005-10-01	-30923344.171389900
2006-01-01	291101230.778429000
2006-04-01	26394585.952907998
2006-07-01	6372724.662443770
2006-10-01	-56755776.127367900
2007-01-01	89155840.922081290
2007-04-01	-190079096.535837020
2007-07-01	387714896.894693000
2007-10-01	163745035.710363000
2008-01-01	-139333292.483546000
2008-04-01	-9372348.552373550
2008-07-01	157448502.515482000
2008-10-01	30207541.226060703
2009-01-01	-44236012.135333800
2009-04-01	87156664.162786000
2009-07-01	1057083141.730679900
2009-10-01	101891080.767390000
2010-01-01	33210441.520959202
2010-04-01	-129610020.270474990
2010-07-01	-67201879.772860810
2010-10-01	44791573.525993004
2011-01-01	-58790696.129605400
2011-04-01	67646967.195239700
2011-07-01	127076776.161289000
2011-10-01	-152248024.940143020
2012-01-01	32785272.079910897
2012-04-01	-26929414.825736300
2012-07-01	18770218.480562000
2012-10-01	-6489017.910202400
2013-01-01	-14514441.660008099
2013-04-01	103174778.798962000
2013-07-01	-17219882.480017600
2013-10-01	66694571.048757195
2014-01-01	1423941617.938720000
2014-04-01	-718539058.436653000
2014-07-01	-68875190.809172300
2014-10-01	-8740500.406134680
2015-01-01	422148585.863641000
2015-04-01	-764278986.512658000
2015-07-01	145632362.766811000
2015-10-01	589813420.888286000
2016-01-01	853051694.114544000
2016-04-01	-221326613.582639000
2016-07-01	60257095.491579495
2016-10-01	-52797950.885358000
2017-01-01	-324994915.228909970
2017-04-01	144070780.462139000
2017-07-01	349998198.547028000
2017-10-01	-7065105.362206820
2018-01-01	-40552961.380692900
2018-04-01	-109591079.877345000