Quarterly US Dollars, sum over component sub-periods
1998-01-01 10986550000.00000
1998-04-01 14155923000.00000
1998-07-01 2678617000.00000
1998-10-01 20109511000.00000
1999-01-01 5330796000.00000
1999-04-01 5303355000.00000
1999-07-01 20275204000.00000
1999-10-01 14300428500.00000
2000-01-01 16007079550.00000
2000-04-01 20383399330.00000
2000-07-01 21893076050.00000
2000-10-01 8351582859.00000
2001-01-01 24235667480.00000
2001-04-01 2296596936.00000
2001-07-01 24358014080.00000
2001-10-01 3161769157.00000
2002-01-01 9759694020.00000
2002-04-01 24504859990.00000
2002-07-01 19744143030.00000
2002-10-01 39188020450.00000
2003-01-01 28249232100.00000
2003-04-01 11623344500.00000
2003-07-01 30060946290.00000
2003-10-01 51237697290.00000
2004-01-01 22786388410.00000
2004-04-01 55398656460.00000
2004-07-01 44190828540.00000
2004-10-01 69245221870.00000
2005-01-01 65038189110.00000
2005-04-01 96526502550.00000
2005-07-01 60864856040.00000
2005-10-01 112765432200.00000
2006-01-01 77001121310.00000
2006-04-01 93447584000.00000
2006-07-01 108328000900.00000
2006-10-01 173149703100.00000
2007-01-01 142983794900.00000
2007-04-01 134258791200.00000
2007-07-01 150854999200.00000
2007-10-01 209052154500.00000
2008-01-01 210672353000.00000
2008-04-01 167877308900.00000
2008-07-01 128713124700.00000
2008-10-01 101398168900.00000
2009-01-01 77722152860.00000
2009-04-01 73726053310.00000
2009-07-01 124123191400.00000
2009-10-01 152773740500.00000
2010-01-01 109170453900.00000
2010-04-01 151660325700.00000
2010-07-01 195835591200.00000
2010-10-01 196930779000.00000
2011-01-01 171326983400.00000
2011-04-01 203298250400.00000
2011-07-01 152238371700.00000
2011-10-01 86714908960.00000
2012-01-01 135585722500.00000
2012-04-01 100142314700.00000
2012-07-01 55453060590.00000
2012-10-01 108404778900.00000
2013-01-01 201802060500.00000
2013-04-01 95090490080.00000
2013-07-01 154263715800.00000
2013-10-01 200509329900.00000
2014-01-01 189642180000.00000
2014-04-01 172882100400.00000
2014-07-01 119729493300.00000
2014-10-01 98380136530.00000
2015-01-01 -21054422549.00000
2015-04-01 128923648803.20001
2015-07-01 -98015661434.00000
2015-10-01 -20640734355.50000
2016-01-01 -15931311764.00000
2016-04-01 105108031763.00000
2016-07-01 92959716727.00000
2016-10-01 48682878259.00000
2017-01-01 52076750198.00000
2017-04-01 111280888141.59999
2017-07-01 109312119410.10000
2017-10-01 106579776229.30000
2018-01-01 98489022767.50000
2018-04-01 117466982224.00000