Quarter	US Dollars, sum over component sub-periods
1995-01-01	-745756458.46101590
1995-04-01	-117591783.04810700
1995-07-01	91153507.43822840
1995-10-01	390266021.16094000
1996-01-01	-418765879.09190303
1996-04-01	-94625191.27736320
1996-07-01	96371470.91808470
1996-10-01	-400404904.18143100
1997-01-01	-912466422.28027700
1997-04-01	-347322735.35305400
1997-07-01	-416666186.89935200
1997-10-01	-595988999.59257590
1998-01-01	-1084128266.55324980
1998-04-01	-780378154.31501390
1998-07-01	-633073574.90349100
1998-10-01	-1011121373.78646000
1999-01-01	-1432861027.77561000
1999-04-01	-1359035417.28159000
1999-07-01	-512008803.27014400
1999-10-01	-838295353.18538610
2000-01-01	-1121327871.50315000
2000-04-01	-779364884.04370700
2000-07-01	-771516380.97151900
2000-10-01	-1227983305.75594000
2001-01-01	-1019615295.95774010
2001-04-01	-806768233.71302600
2001-07-01	-272242581.77439904
2001-10-01	-750260565.59417500
2002-01-01	-697229679.23777010
2002-04-01	-1028176967.55135990
2002-07-01	-810727532.19645300
2002-10-01	-1737451929.60785980
2003-01-01	-1532030005.97542000
2003-04-01	-1810376433.54662010
2003-07-01	-1312979078.52336000
2003-10-01	-1711280698.19917000
2004-01-01	-2568935973.56161980
2004-04-01	-2754015370.59201000
2004-07-01	-2779348023.68143000
2004-10-01	-2740001137.61867000
2005-01-01	-2656054231.46755000
2005-04-01	-2360743619.40312000
2005-07-01	-2780695443.61578000
2005-10-01	-2277768741.86789040
2006-01-01	-3307855439.83742000
2006-04-01	-2429231917.52383000
2006-07-01	-2897459079.38679030
2006-10-01	-1338883699.28275010
2007-01-01	-2858074422.09500030
2007-04-01	-2884101308.01191000
2007-07-01	-1275723553.86254000
2007-10-01	-1792795587.42199000
2008-01-01	-4340967834.15275000
2008-04-01	-2397027433.84591000
2008-07-01	-3745595654.21810000
2008-10-01	-2286974896.15494970
2009-01-01	-480140072.40636300
2009-04-01	1559565250.22134000
2009-07-01	-789776028.56870100
2009-10-01	-208290115.61165200
2010-01-01	401541690.41517000
2010-04-01	1140671913.96680000
2010-07-01	90001167.35735309
2010-10-01	-253621414.60923400
2011-01-01	-207690689.68178102
2011-04-01	173862359.02431700
2011-07-01	238341232.25300300
2011-10-01	725032432.41458500
2012-01-01	-334150048.04651600
2012-04-01	2579314480.07991000
2012-07-01	2407486324.48335000
2012-10-01	1286293030.47694000
2013-01-01	2161820591.61105000
2013-04-01	2284748267.51729000
2013-07-01	2136717478.47713000
2013-10-01	1780694778.13537000
2014-01-01	-467316568.26341600
2014-04-01	1050822441.32793000
2014-07-01	1768535232.41931000
2014-10-01	3157831112.42015000
2015-01-01	974618528.14394900
2015-04-01	2218566675.00260970
2015-07-01	1319195663.15617000
2015-10-01	2924714097.65876960
2016-01-01	738824315.37118900
2016-04-01	2664142917.61519000
2016-07-01	938900191.49952100
2016-10-01	54291544.49669350
2017-01-01	24532042.11077470
2017-04-01	2725334191.65362020
2017-07-01	-831632564.89709100
2017-10-01	632847286.18443390
2018-01-01	1473025431.99784020
2018-04-01	414068645.21841400