Quarter	US Dollars, sum over component sub-periods
1995-01-01	-194538523.2701770000
1995-04-01	1246029.2904308198
1995-07-01	16638988.4248102000
1995-10-01	42063335.0350343960
1996-01-01	4121139.8079548500
1996-04-01	37063542.4615406000
1996-07-01	-16093624.6400925000
1996-10-01	180223710.4410900000
1997-01-01	-32358360.0502781000
1997-04-01	213077176.2310700000
1997-07-01	138562161.3821820000
1997-10-01	195848430.7506700000
1998-01-01	100967593.0470299900
1998-04-01	129361060.7113980000
1998-07-01	302840810.2889740000
1998-10-01	227711198.3884720200
1999-01-01	242075081.6693760200
1999-04-01	115345338.7360520000
1999-07-01	-18945730.1491989000
1999-10-01	197041203.3541890000
2000-01-01	353099174.0764890300
2000-04-01	221095924.3977230000
2000-07-01	61262055.4067155940
2000-10-01	78826128.0108664000
2001-01-01	186950386.8984220000
2001-04-01	62785808.0491175950
2001-07-01	112583838.7109759900
2001-10-01	-244642043.3956860000
2002-01-01	216403181.3223270000
2002-04-01	65529071.2636503950
2002-07-01	-72503980.2360692000
2002-10-01	277924822.3145790000
2003-01-01	-141367852.4699820000
2003-04-01	-23123474.0326869000
2003-07-01	-545820950.8278710000
2003-10-01	282949796.2283439600
2004-01-01	-613062321.4661670000
2004-04-01	764355779.3682591000
2004-07-01	-89452130.4626638000
2004-10-01	461664729.8193250000
2005-01-01	-56203557.9661520000
2005-04-01	1514494578.0917802000
2005-07-01	1018440878.1356400000
2005-10-01	2595336703.4452500000
2006-01-01	5565246711.5833400000
2006-04-01	-299360438.5992530000
2006-07-01	373861588.1977100000
2006-10-01	3208159153.6393300000
2007-01-01	6096373104.5184110000
2007-04-01	6565004290.9815800000
2007-07-01	10849119504.4233020000
2007-10-01	10004410146.2211000000
2008-01-01	-1085287566.2458500000
2008-04-01	2478828325.3056500000
2008-07-01	4235755206.0012403000
2008-10-01	984475874.7646500000
2009-01-01	-698294800.3507220000
2009-04-01	-769442492.1299610000
2009-07-01	-618061781.2781720000
2009-10-01	-842755672.7301600000
2010-01-01	700100.9470854820
2010-04-01	124627899.4162300000
2010-07-01	-1756409511.2218600000
2010-10-01	-406128639.6638740300
2011-01-01	-574601114.0462980000
2011-04-01	-1388981210.0251100000
2011-07-01	568105457.8383850000
2011-10-01	-1795928368.3223400000
2012-01-01	-1958237784.2627099000
2012-04-01	-3030842779.9736200000
2012-07-01	-249663150.6492850000
2012-10-01	-1019057293.4473699000
2013-01-01	-94036780.7740326000
2013-04-01	24776235.5525076000
2013-07-01	-850181489.6168580000
2013-10-01	47656206.9317813960
2014-01-01	1400358.9053915600
2014-04-01	-264592404.0458160000
2014-07-01	-1048926557.0094001000
2014-10-01	-3903946989.2690800000
2015-01-01	204884335.7116890000
2015-04-01	-189888591.4028450000
2015-07-01	-63238666.9502489000
2015-10-01	2983817833.1098704000
2016-01-01	-3371644978.7491200000
2016-04-01	62127686.6110058000
2016-07-01	-228115675.9230510000
2016-10-01	-67154838.0686509000
2017-01-01	5625158.8710887200
2017-04-01	259022693.6536280000
2017-07-01	-226028860.8802720000
2017-10-01	127322470.2533599900
2018-01-01	124223427.6054480000
2018-04-01	-49636760.6924217050