Quarter	US Dollars, sum over component sub-periods
1998-01-01	5417930000.000000
1998-04-01	1796110000.000000
1998-07-01	-1813893000.000000
1998-10-01	7287968000.000000
1999-01-01	-564612000.000000
1999-04-01	-5498262000.000000
1999-07-01	6013153000.000000
1999-10-01	3350000900.000000
2000-01-01	3762205553.000000
2000-04-01	-1246854770.000000
2000-07-01	11347037820.000000
2000-10-01	-5271495870.000000
2001-01-01	4773863485.000000
2001-04-01	-8198146064.000001
2001-07-01	5419269076.000000
2001-10-01	10501176820.000000
2002-01-01	2315481086.000000
2002-04-01	16560132249.999998
2002-07-01	2725151703.000000
2002-10-01	21565826700.000000
2003-01-01	12720327590.000000
2003-04-01	-4879368005.000000
2003-07-01	18383173560.000000
2003-10-01	25003089240.000000
2004-01-01	750746399.500000
2004-04-01	1953617906.000000
2004-07-01	33425581670.000000
2004-10-01	45708527700.000000
2005-01-01	34726730240.000000
2005-04-01	44368458800.000000
2005-07-01	24135204060.000000
2005-10-01	56171248580.000000
2006-01-01	40629072620.000000
2006-04-01	51712891340.000000
2006-07-01	75019879670.000000
2006-10-01	72129368190.000000
2007-01-01	94588840160.000000
2007-04-01	70830080980.000000
2007-07-01	86759938400.000000
2007-10-01	117392882800.000000
2008-01-01	115287208900.000000
2008-04-01	97857959360.000000
2008-07-01	98076941280.000000
2008-10-01	131242227699.999980
2009-01-01	47389933650.000000
2009-04-01	16972780510.000000
2009-07-01	78100292550.000000
2009-10-01	63350033460.000000
2010-01-01	24751933010.000000
2010-04-01	32019204310.000000
2010-07-01	77900586140.000000
2010-10-01	54833129250.000000
2011-01-01	32416393060.000000
2011-04-01	29750246070.000000
2011-07-01	22703302280.000000
2011-10-01	42907360420.000000
2012-01-01	31285314250.000000
2012-04-01	12816514180.000000
2012-07-01	58280953810.000000
2012-10-01	30206878870.000000
2013-01-01	57242204550.000000
2013-04-01	17748210040.000000
2013-07-01	22721816650.000000
2013-10-01	-9381056590.000000
2014-01-01	43471572050.000000
2014-04-01	57159012100.000000
2014-07-01	39930039260.000000
2014-10-01	28580534140.000000
2015-01-01	12188979700.000000
2015-04-01	63857052630.000000
2015-07-01	-19626906650.000000
2015-10-01	35103784640.000000
2016-01-01	5414033153.000000
2016-04-01	23743996040.000000
2016-07-01	-2886218539.000000
2016-10-01	-53866151940.000000
2017-01-01	-39433835950.000000
2017-04-01	461729533.700000
2017-07-01	-14218396430.000000
2017-10-01	-3905697627.000000
2018-01-01	-72672983830.000000
2018-04-01	-6038484665.000000