Quarter	US Dollars, sum over component sub-periods
1982-01-01	-288348103.640543000
1982-04-01	-344127254.885885950
1982-07-01	-1413446808.409000000
1982-10-01	-1587108721.571110000
1983-01-01	-376197631.390076040
1983-04-01	586652434.489182000
1983-07-01	-574217429.302830100
1983-10-01	-1623658702.308610000
1984-01-01	-192894452.544635000
1984-04-01	386161192.236038000
1984-07-01	-773654706.255402000
1984-10-01	-382178474.073748000
1985-01-01	-44555219.879558500
1985-04-01	-1848073471.968490000
1985-07-01	-1300943225.931930000
1985-10-01	-973506329.200577000
1986-01-01	-694611335.779563000
1986-04-01	379682540.237004000
1986-07-01	-1414566976.602520000
1986-10-01	-1557989056.117319800
1987-01-01	-1950831888.226460000
1987-04-01	-1178666759.451120000
1987-07-01	-1100163894.442080000
1987-10-01	-1740174307.219200100
1988-01-01	-3034061058.682029700
1988-04-01	-1447485118.062739800
1988-07-01	-2126967220.209080000
1988-10-01	-3443459822.589250000
1989-01-01	-2313684222.339830000
1989-04-01	-4045952185.329810000
1989-07-01	-3535061667.628150000
1989-10-01	-7990945512.126850000
1990-01-01	-2502149093.875360000
1990-04-01	-10518669135.497599000
1990-07-01	-6034324799.906879000
1990-10-01	-8938729138.608171000
1991-01-01	65979270.180334300
1991-04-01	-174978155.334530000
1991-07-01	5889856385.922680000
1991-10-01	4063961348.077330000
1992-01-01	-927768729.797539000
1992-04-01	-4570540457.151500000
1992-07-01	-5098413130.787629000
1992-10-01	5377523525.735539000
1993-01-01	7290505264.749021000
1993-04-01	-10277330715.887200000
1993-07-01	2625393478.947330000
1993-10-01	1241078548.321830000
1994-01-01	-763978362.397650000
1994-04-01	-7812348082.141220000
1994-07-01	-9151946682.540619000
1994-10-01	-1900973729.800120000
1995-01-01	-2419197228.758560000
1995-04-01	505467097.314121000
1995-07-01	-960041866.677776100
1995-10-01	8320004196.889050000
1996-01-01	-2392674168.169840000
1996-04-01	3450333514.467380000
1996-07-01	2229860912.930450000
1996-10-01	-3576927204.283260000
1997-01-01	533719566.186197000
1997-04-01	594679695.733006000
1997-07-01	-4317659235.027880000
1997-10-01	-3710015052.564620000
1998-01-01	-7209785296.152730000
1998-04-01	-8108674554.079600000
1998-07-01	-1339748208.498810000
1998-10-01	-6206022744.906569500
1999-01-01	6162807002.823800000
1999-04-01	-763861847.528064000
1999-07-01	7105384094.674450000
1999-10-01	-4358064316.185519000
2000-01-01	-6774932769.691359500
2000-04-01	-1723889042.283080000
2000-07-01	-5461481950.608900000
2000-10-01	-5473066392.555570000
2001-01-01	-5383234989.031420000
2001-04-01	-3078784509.740860000
2001-07-01	1118519569.310710000
2001-10-01	-3551714827.666100000
2002-01-01	-2668371835.803630000
2002-04-01	655344806.245191900
2002-07-01	111061224.221719000
2002-10-01	-1885943752.375050000
2003-01-01	3719927201.428480000
2003-04-01	-8341763520.494829000
2003-07-01	1281314698.675540000
2003-10-01	-1899890084.167280000
2004-01-01	-68984631.317333100
2004-04-01	-4577682088.897019000
2004-07-01	12129624861.342000000
2004-10-01	-16839731253.662899000
2005-01-01	2843958544.352930000
2005-04-01	1492655129.683990000
2005-07-01	8359067155.237281000
2005-10-01	-2689835871.536280000
2006-01-01	7045931738.977369000
2006-04-01	-11107734174.417000000
2006-07-01	5569049371.625260000
2006-10-01	9879248777.182020000
2007-01-01	8575181038.867000000
2007-04-01	-5693116536.276071000
2007-07-01	2082359619.193570000
2007-10-01	9278618872.728449000
2008-01-01	-7316712168.196940000
2008-04-01	-6232060173.014420000
2008-07-01	-12703819069.566200000
2008-10-01	-9468141223.706320000
2009-01-01	2770948002.430270000
2009-04-01	24451832677.395702000
2009-07-01	9635750438.984600000
2009-10-01	-463292052.267710030
2010-01-01	36911999999.078300000
2010-04-01	-12408493916.307299000
2010-07-01	9698718711.819810000
2010-10-01	7705484974.096550000
2011-01-01	2614682774.765390000
2011-04-01	8967479481.686300000
2011-07-01	32009982012.874302000
2011-10-01	9941222675.366180000
2012-01-01	7608821806.761790000
2012-04-01	3378049672.461630000
2012-07-01	8118603118.402040500
2012-10-01	-2023182886.840160100
2013-01-01	-1181756659.766929900
2013-04-01	13803240723.825400000
2013-07-01	22298801762.241100000
2013-10-01	2971690254.060220200
2014-01-01	-19696108445.103897000
2014-04-01	-11972153.671963999
2014-07-01	-8311946175.394940000
2014-10-01	16674473688.353500000
2015-01-01	228770001.332052000
2015-04-01	8494843289.444520000
2015-07-01	-7286692358.604200000
2015-10-01	13299040527.455500000
2016-01-01	-3736640143.475970300
2016-04-01	-18750406995.942000000
2016-07-01	-607032581.874601000
2016-10-01	3816691040.482410000
2017-01-01	3769423033.257419600
2017-04-01	3885238580.918790000
2017-07-01	353617215.292942000
2017-10-01	5814912131.744190000
2018-01-01	-6684208320.530379000
2018-04-01	4299735687.656070000