Quarter	US Dollars, sum over component sub-periods
2002-01-01	-14026069.3823865000
2002-04-01	-15633447.3571113010
2002-07-01	-18690077.3202963000
2002-10-01	-19008872.7695669980
2003-01-01	-25764566.0329917000
2003-04-01	-27261397.0286716000
2003-07-01	-3376971.0664546600
2003-10-01	-19038436.2454724000
2004-01-01	-46255543.7925060000
2004-04-01	-48209848.6029436000
2004-07-01	-63579217.8805495000
2004-10-01	-51816092.0615154000
2005-01-01	31451012.8262632000
2005-04-01	-17619153.3558049000
2005-07-01	13414509.8425104000
2005-10-01	9514875.1296584220
2006-01-01	4811590.5913790000
2006-04-01	3770655.1361297100
2006-07-01	6372724.6624437700
2006-10-01	6449520.0144736300
2007-01-01	-3933345.9230330000
2007-04-01	-2696157.3976714500
2007-07-01	-2749751.0418063300
2007-10-01	-2898142.2249621800
2008-01-01	-8989244.6763578100
2008-04-01	-4686174.2761867700
2008-07-01	0.0000000000
2008-10-01	-3940114.0729644400
2009-01-01	-19515887.7067649000
2009-04-01	-17703697.4080659000
2009-07-01	-21456356.0567797000
2009-10-01	-22150234.9494326000
2010-01-01	5535073.5868265300
2010-04-01	2541372.9464799003
2010-07-01	0.0000000000
2010-10-01	2714640.8197571500
2011-01-01	0.0000000000
2011-04-01	-1439297.1743667999
2011-07-01	-5647856.7182795300
2011-10-01	6736638.2716877395
2012-01-01	0.0000000000
2012-04-01	0.0000000000
2012-07-01	0.0000000000
2012-10-01	0.0000000000
2013-01-01	-343068621.0547370000
2013-04-01	-339562563.1358240000
2013-07-01	-344397649.6003520000
2013-10-01	-353889560.6668750000
2014-01-01	-2365469906.2196703000
2014-04-01	-2366790868.0566100000
2014-07-01	-2286126525.7044500000
2014-10-01	-2155157671.5697803000
2015-01-01	-834165605.6665540000
2015-04-01	-263239361.4906110000
2015-07-01	105611255.4415800000
2015-10-01	-525251283.9079360000
2016-01-01	-2639610862.2795000000
2016-04-01	-529602968.2156009700
2016-07-01	-257766464.0473120200
2016-10-01	-2023562280.8714800000
2017-01-01	-15020092869.0712010000
2017-04-01	-6857109283.8277600000
2017-07-01	-7015232348.7295200000
2017-10-01	-2184295074.4822803000
2018-04-01	-438364319.5093790000