Quarter	US Dollars, sum over component sub-periods
1990-01-01	-724176404.9562509000
1990-04-01	-1247198785.3395102000
1990-07-01	-2443659564.7715597000
1990-10-01	-3194556042.9029503000
1991-01-01	-2605614333.5637197000
1991-04-01	-1574290901.6502600000
1991-07-01	-92246767.8689288000
1991-10-01	609483080.6486930000
1992-01-01	-249559434.5326150000
1992-04-01	-1959675550.4055600000
1992-07-01	-884318269.6021630000
1992-10-01	-208209299.9384110000
1993-01-01	-1830659813.5309600000
1993-04-01	-813011242.5506940000
1993-07-01	-209491797.5078379800
1993-10-01	8256258.1001914395
1994-01-01	654747541.2699740000
1994-04-01	1207860930.1781900000
1994-07-01	-260466723.4714280000
1994-10-01	-1676472528.2043500000
1995-01-01	-1984429182.1215800000
1995-04-01	-505337245.9411930000
1995-07-01	-511362910.1287140000
1995-10-01	-1733029428.7075200000
1996-01-01	-2546991981.4630800000
1996-04-01	-2154639291.9848600000
1996-07-01	-1606944434.1844200000
1996-10-01	-1568508396.2780200000
1997-01-01	241317328.3847210000
1997-04-01	-1050842321.2516300000
1997-07-01	-854915642.3460870000
1997-10-01	-2596125180.7304997000
1998-01-01	-854929815.9246250000
1998-04-01	-2030571847.9810000000
1998-07-01	-1644102540.4254599000
1998-10-01	-989194996.5201670000
1999-01-01	321783135.9987020000
1999-04-01	-1085776397.6024400000
1999-07-01	-1899283312.1976900000
1999-10-01	-559389771.1212050000
2000-01-01	-849385633.2377920000
2000-04-01	-2631284561.4979200000
2000-07-01	-1926606634.9014800000
2000-10-01	1137278257.0111600000
2001-01-01	449099899.4196639700
2001-04-01	1334247468.8634700000
2001-07-01	-1384428641.1488000000
2001-10-01	295967114.5797780000
2002-01-01	2960347925.9487700000
2002-04-01	1002855312.2158201000
2002-07-01	1764468279.7987800000
2002-10-01	1141136017.3669700000
2003-01-01	2234593134.4925700000
2003-04-01	-219297375.7414040000
2003-07-01	3548014822.4503600000
2003-10-01	3679201740.6976004000
2004-01-01	7676803394.6251800000
2004-04-01	3905450123.1357900000
2004-07-01	-4182048215.7403100000
2004-10-01	-6028143494.6062400000
2005-01-01	4441722694.7152605000
2005-04-01	-4527622106.8588400000
2005-07-01	-5287643161.6563300000
2005-10-01	-5451016847.5962200000
2006-01-01	4846911083.4348710000
2006-04-01	-4346522496.1055600000
2006-07-01	-5589984422.5451100000
2006-10-01	-3309809163.7557900000
2007-01-01	4648844523.8641400000
2007-04-01	-4496488368.9346800000
2007-07-01	-3987905418.1325000000
2007-10-01	-2901747062.3960500000
2008-01-01	-3033590485.3744802000
2008-04-01	-3207231314.3566800000
2008-07-01	-11075469643.7994000000
2008-10-01	-12509937228.8410000000
2009-01-01	-56856384.3893397000
2009-04-01	-3685000000.0000000000
2009-07-01	-9833000000.8696400000
2009-10-01	-12597999999.6238000000
2010-01-01	-12058999999.2742000000
2010-04-01	-13528287386.5509000000
2010-07-01	-18599556525.9478000000
2010-10-01	-12249235584.2853000000
2011-01-01	-6128838378.2160000000
2011-04-01	-18653263880.5530000000
2011-07-01	-19029940414.6436000000
2011-10-01	-20578484660.0427000000
2012-01-01	-22413800624.0030020000
2012-04-01	-16071004635.6710010000
2012-07-01	-20998730297.7603000000
2012-10-01	-30754197109.8355000000
2013-01-01	-17625692319.3375970000
2013-04-01	-20096559143.3738020000
2013-07-01	-5631066084.1091200000
2013-10-01	-4678869014.5891490000
2014-01-01	-2174399786.3432302000
2014-04-01	-7584116963.4939100000
2014-07-01	-10680374862.4315990000
2014-10-01	-9551377269.4869690000
2015-01-01	91141278.6943077000
2015-04-01	-7186138386.9370500000
2015-07-01	-8953543269.6995600000
2015-10-01	-6831241126.8711000000
2016-01-01	-149261565.4160870000
2016-04-01	-34633636.9056165000
2016-07-01	-4320195154.7281290000
2016-10-01	-7322540441.3759990000
2017-01-01	-3002867767.8810000000
2017-04-01	-15516403468.4888000000
2017-07-01	-7411297144.9391100000
2017-10-01	-13049788419.9044000000
2018-01-01	-11810870756.6583000000
2018-04-01	-16561207386.8232000000