Quarterly US Dollars, sum over component sub-periods
1999-01-01 -32148996778.924297
1999-04-01 -21283979176.654800
1999-07-01 -33644227192.156002
1999-10-01 -31218138452.272800
2000-01-01 -33524918483.448795
2000-04-01 -29315797557.624200
2000-07-01 -29661525104.200600
2000-10-01 -34431849192.711105
2001-01-01 -34573401565.073900
2001-04-01 -31847129782.820000
2001-07-01 -26994601387.710900
2001-10-01 -32283664082.185200
2002-01-01 -34834221026.292600
2002-04-01 -31318047794.345900
2002-07-01 -30053042184.114403
2002-10-01 -35145657218.843100
2003-01-01 -42954463220.165890
2003-04-01 -38600525707.717000
2003-07-01 -41072577614.422400
2003-10-01 -36760686322.017000
2004-01-01 -56976520784.970300
2004-04-01 -41411719798.590000
2004-07-01 -46639019298.882100
2004-10-01 -46124566330.719200
2005-01-01 -68383700188.452100
2005-04-01 -44721631427.589500
2005-07-01 -51680399472.912895
2005-10-01 -47763266382.906800
2006-01-01 -58286639602.693300
2006-04-01 -42397699921.553300
2006-07-01 -54459674611.261900
2006-10-01 -50525428660.396904
2007-01-01 -77361355857.140610
2007-04-01 -45559560399.737400
2007-07-01 -57723876267.126100
2007-10-01 -65617454491.737790
2008-01-01 -89257808542.968890
2008-04-01 -55113676026.670906
2008-07-01 -62223093597.751800
2008-10-01 -61437454591.676600
2009-01-01 -73512529153.734500
2009-04-01 -59520086218.404594
2009-07-01 -64478636036.437200
2009-10-01 -69630769587.405700
2010-01-01 -89254895140.857400
2010-04-01 -53828605743.403500
2010-07-01 -68324659356.697200
2010-10-01 -69417291189.473190
2011-01-01 -89284249837.614200
2011-04-01 -56445211446.619804
2011-07-01 -68878633150.676800
2011-10-01 -69394661890.320700
2012-01-01 -91193791497.486700
2012-04-01 -59527662507.603300
2012-07-01 -62482801809.407900
2012-10-01 -65367071112.623200
2013-01-01 -89660368910.932890
2013-04-01 -63181632211.951600
2013-07-01 -70357661817.296500
2013-10-01 -65121207949.668200
2014-01-01 -92301205409.362000
2014-04-01 -59962495785.596405
2014-07-01 -66752305552.556190
2014-10-01 -75599394255.125990
2015-01-01 -90175187710.433100
2015-04-01 -55596080532.093300
2015-07-01 -64500230926.918700
2015-10-01 -68955479294.410900
2016-01-01 -86437441131.099700
2016-04-01 -54800159044.232000
2016-07-01 -75451061411.201200
2016-10-01 -73969820716.956300
2017-01-01 -76446039458.943010
2017-04-01 -71609789667.745910
2017-07-01 -72505270239.718800
2017-10-01 -72825645969.537600
2018-01-01 -87017554047.475390