Quarterly US Dollars, sum over component sub-periods
1997-01-01 -4515835542.20301000
1997-04-01 30607038514.52509700
1997-07-01 7477539749.22137900
1997-10-01 1043148956.72364000
1998-01-01 307118059.59561200
1998-04-01 19432073048.16430000
1998-07-01 6572957918.93218000
1998-10-01 7407259566.36174000
1999-01-01 2874733992.51483000
1999-04-01 6482105776.17673000
1999-07-01 -10122790666.81250000
1999-10-01 9619113636.80597900
2000-01-01 7995854200.87149050
2000-04-01 5503364412.46272000
2000-07-01 -5955273914.87384000
2000-10-01 240848063.99529300
2001-01-01 25921839893.34640000
2001-04-01 5835290467.71456000
2001-07-01 -6276598506.82218000
2001-10-01 -4140665230.65524960
2002-01-01 -3863305485.51107000
2002-04-01 3303255465.10257960
2002-07-01 2774984637.92400000
2002-10-01 19031883510.28809700
2003-01-01 20504300467.92250000
2003-04-01 11473640474.44220000
2003-07-01 -11512094365.54390100
2003-10-01 -1576620501.57819000
2004-01-01 18634733399.21880000
2004-04-01 -6675858785.29261000
2004-07-01 13167011487.60840000
2004-10-01 20017851765.66489800
2005-01-01 43613381577.95280500
2005-04-01 38147984037.22550000
2005-07-01 -20648589150.30790000
2005-10-01 -16721203680.98350100
2006-01-01 54984451482.98350500
2006-04-01 39188418829.79610400
2006-07-01 -3683434854.89250000
2006-10-01 22248264241.92820000
2007-01-01 3626544941.03642000
2007-04-01 68423082438.10599500
2007-07-01 -5143409323.69875050
2007-10-01 -628896862.81679310
2008-01-01 28800041735.60440000
2008-04-01 37675279122.44960000
2008-07-01 -37889607252.96370000
2008-10-01 -68073350838.60660000
2009-01-01 37864725328.66530000
2009-04-01 2685514714.51584000
2009-07-01 -3886461293.75137000
2009-10-01 -98413493880.32880000
2010-01-01 -16428098405.70110100
2010-04-01 -29355398904.78930300
2010-07-01 -12469825729.39099900
2010-10-01 -10821915627.96190000
2011-01-01 10524901832.69080200
2011-04-01 -1285292376.70956000
2011-07-01 31732482971.65350000
2011-10-01 21511433329.15330000
2012-01-01 15553333074.70970200
2012-04-01 21937214258.27950000
2012-07-01 -3488757941.58711000
2012-10-01 8723835678.47609900
2013-01-01 -3036157296.33442000
2013-04-01 -500201775.69623303
2013-07-01 -8568878443.32568100
2013-10-01 -21621291043.05119700
2014-01-01 7148488430.38344000
2014-04-01 18341943598.56620000
2014-07-01 -6608044748.98001000
2014-10-01 4875950583.70799000
2015-01-01 3834234889.20416000
2015-04-01 -13435161865.65739800
2015-07-01 -10006388528.73330000
2015-10-01 -3841994287.08492000
2016-01-01 5574593628.98109000
2016-04-01 5139068461.29894000
2016-07-01 -20616853635.23000000
2016-10-01 16555928884.76579900
2017-01-01 22091129778.77300000
2017-04-01 -8139449207.63581000
2017-07-01 2233881119.58539000
2017-10-01 11377174668.27369900
2018-01-01 12423952713.90320000
2018-04-01 17186740222.50359700