Quarterly US Dollars, sum over component sub-periods
1980-01-01 0.0000000000
1980-04-01 0.0000000000
1980-07-01 0.0000000000
1980-10-01 0.0000000000
1981-01-01 0.0000000000
1981-04-01 0.0000000000
1981-07-01 0.0000000000
1981-10-01 0.0000000000
1982-01-01 0.0000000000
1982-04-01 0.0000000000
1982-07-01 0.0000000000
1982-10-01 0.0000000000
1983-01-01 0.0000000000
1983-04-01 0.0000000000
1983-07-01 0.0000000000
1983-10-01 0.0000000000
1984-01-01 0.0000000000
1984-04-01 0.0000000000
1984-07-01 0.0000000000
1984-10-01 0.0000000000
1985-01-01 0.0000000000
1985-04-01 0.0000000000
1985-07-01 0.0000000000
1985-10-01 0.0000000000
1986-01-01 0.0000000000
1986-04-01 0.0000000000
1986-07-01 0.0000000000
1986-10-01 0.0000000000
1987-01-01 0.0000000000
1987-04-01 0.0000000000
1987-07-01 0.0000000000
1987-10-01 0.0000000000
1988-01-01 0.0000000000
1988-04-01 0.0000000000
1988-07-01 0.0000000000
1988-10-01 0.0000000000
1989-01-01 0.0000000000
1989-04-01 0.0000000000
1989-07-01 0.0000000000
1989-10-01 0.0000000000
1990-01-01 0.0000000000
1990-04-01 0.0000000000
1990-07-01 0.0000000000
1990-10-01 0.0000000000
1991-01-01 0.0000000000
1991-04-01 0.0000000000
1991-07-01 0.0000000000
1991-10-01 0.0000000000
1992-01-01 0.0000000000
1992-04-01 0.0000000000
1992-07-01 0.0000000000
1992-10-01 0.0000000000
1993-01-01 0.0000000000
1993-04-01 0.0000000000
1993-07-01 0.0000000000
1993-10-01 0.0000000000
1994-01-01 0.0000000000
1994-04-01 0.0000000000
1994-07-01 0.0000000000
1994-10-01 0.0000000000
1995-01-01 0.0000000000
1995-04-01 0.0000000000
1995-07-01 0.0000000000
1995-10-01 0.0000000000
1996-01-01 0.0000000000
1996-04-01 0.0000000000
1996-07-01 0.0000000000
1996-10-01 0.0000000000
1997-01-01 0.0000000000
1997-04-01 0.0000000000
1997-07-01 0.0000000000
1997-10-01 0.0000000000
1998-01-01 -15400000.0000000000
1998-04-01 429600000.0000000000
1998-07-01 20400000.0000000000
1998-10-01 5100000.0000000000
1999-01-01 -11500000.0000000000
1999-04-01 -8199999.9999999990
1999-07-01 5700000.0000000000
1999-10-01 -700000.0000000000
2000-01-01 -8199999.9999999990
2000-04-01 -2600000.0000000000
2000-07-01 1800000.0000000000
2000-10-01 -2400000.0000000000
2001-01-01 -2800000.0000000000
2001-04-01 2100000.0000000000
2001-07-01 -61600000.0000000000
2001-10-01 -1100000.0000000000
2002-01-01 -2600000.0000000000
2002-04-01 -4099999.9999999995
2002-07-01 -1600000.0000000000
2002-10-01 -3800000.0000000000
2003-01-01 -4300000.0000000000
2003-04-01 -29100000.0000000000
2003-07-01 -1900000.0000000000
2003-10-01 -19400000.0000000000
2004-01-01 3100000.0000000000
2004-04-01 3700000.0000000000
2004-07-01 -1500000.0000000000
2004-10-01 -2100000.0000000000
2005-01-01 -1900000.0000000000
2005-04-01 -4300000.0000000000
2005-07-01 -21200000.0000000000
2005-10-01 26900000.0000000000
2006-01-01 -52000000.0000000000
2006-04-01 -8500000.0000000000
2006-07-01 8900000.0000000000
2006-10-01 -18500000.0000000000
2007-01-01 -76700000.0000000000
2007-04-01 26200000.0000000000
2007-07-01 24900000.0000000000
2007-10-01 3500000.0000000000
2008-01-01 -9900000.0000000000
2008-04-01 -2000000.0000000000
2008-07-01 20900000.0000000000
2008-10-01 -9200000.0000000000
2009-01-01 -13000000.0000000000
2009-04-01 -6800000.0000000000
2009-07-01 -24700000.0000000000
2009-10-01 -24700000.0000000000
2010-01-01 -33900000.0000000000
2010-04-01 -28100000.0000000000
2010-07-01 -16600000.0000000020
2010-10-01 4600000.0000000000
2011-01-01 -30100000.0000000000
2011-04-01 -9400000.0000000000
2011-07-01 -5300000.0000000000
2011-10-01 -66800000.0000000000
2012-01-01 -19300000.0000000000
2012-04-01 -7100000.0000000000
2012-07-01 -8700000.0000000000
2012-10-01 -2500000.0000000000
2013-01-01 -5200000.0000000000
2013-04-01 -29700000.0000000000
2013-07-01 11800000.0000000000
2013-10-01 -6800000.0000000000
2014-01-01 -900000.0000000000
2014-04-01 -2900000.0000000000
2014-07-01 1600000.0000000000
2014-10-01 -7700000.0000000000
2015-01-01 -22800000.0000000000
2015-04-01 -27700000.0000000000
2015-07-01 -30900000.0000000000
2015-10-01 -4500000.0000000000
2016-01-01 -10700000.0000000000
2016-04-01 -8700000.0000000000
2016-07-01 11200000.0000000000
2016-10-01 -46200000.0000000000
2017-01-01 -8000000.0000000000
2017-04-01 -73500000.0000000000
2017-07-01 -28000000.0000000000
2017-10-01 17900000.0000000000
2018-01-01 -19200000.0000000000
2018-04-01 -64800000.0000000000
2018-07-01 65900000.0000000100