Quarter	US Dollars, sum over component sub-periods
1998-01-01	-3442850000.0000000
1998-04-01	1221653000.0000000
1998-07-01	-5601235000.0000000
1998-10-01	-796825000.0000000
1999-01-01	-789043000.0000000
1999-04-01	-706021000.0000000
1999-07-01	4240603000.0000000
1999-10-01	1110228400.0000000
2000-01-01	5675567000.0000000
2000-04-01	8448906100.0000000
2000-07-01	1374488230.0000000
2000-10-01	-3170118470.0000000
2001-01-01	5191790000.0000000
2001-04-01	3514775000.0000000
2001-07-01	6858770000.0000000
2001-10-01	-19499090600.0000000
2002-01-01	-2070047099.9999998
2002-04-01	-5070867080.0000000
2002-07-01	3134773834.0000000
2002-10-01	2976264569.0000000
2003-01-01	3219528185.0000000
2003-04-01	379594582.3000000
2003-07-01	3152213124.0000000
2003-10-01	5292178910.0000000
2004-01-01	7521172007.0000000
2004-04-01	29694413090.0000000
2004-07-01	-3992956300.0000000
2004-10-01	1248514300.0000000
2005-01-01	10749672110.0000000
2005-04-01	17561375940.0000000
2005-07-01	7280843919.0000000
2005-10-01	14645700270.0000000
2006-01-01	8889206160.0000000
2006-04-01	6088060196.0000000
2006-07-01	8369963984.0000000
2006-10-01	22144731500.0000000
2007-01-01	17187893840.0000000
2007-04-01	17164222630.0000000
2007-07-01	24494181490.0000000
2007-10-01	31517847100.0000000
2008-01-01	38292859640.0000000
2008-04-01	36054515050.0000000
2008-07-01	-12927324000.0000000
2008-10-01	-76412515110.0000000
2009-01-01	1490845765.0000000
2009-04-01	25191437310.0000000
2009-07-01	4802667979.0000000
2009-10-01	30377031710.0000000
2010-01-01	32551667320.0000000
2010-04-01	62069214400.0000000
2010-07-01	43986028320.0000000
2010-10-01	50101003850.0000000
2011-01-01	64936777390.0000000
2011-04-01	92725219300.0000000
2011-07-01	66103074429.9999900
2011-10-01	-31427537280.0000000
2012-01-01	37312935510.0000000
2012-04-01	27041135160.0000000
2012-07-01	-67247957490.0000000
2012-10-01	-25493703280.0000000
2013-01-01	70942195170.0000000
2013-04-01	-2373919502.0000000
2013-07-01	66661410080.0000000
2013-10-01	78932212790.0000000
2014-01-01	64299418250.0000000
2014-04-01	48085801970.0000000
2014-07-01	-11626321500.0000000
2014-10-01	-50607518200.0000000
2015-01-01	-117114893600.0000000
2015-04-01	-12773615210.0000000
2015-07-01	-103555736800.0000000
2015-10-01	-118094088200.0000000
2016-01-01	-43676553540.0000000
2016-04-01	19551664510.0000000
2016-07-01	43160722480.0000000
2016-10-01	14129273680.0000000
2017-01-01	51646221390.0000000
2017-04-01	75097682010.0000000
2017-07-01	29119800250.0000000
2017-10-01	-4559500247.0000000
2018-01-01	54411202490.0000000
2018-04-01	5601192577.0000000