Quarter	US Dollars, Sum Over Component Sub-periods
1980-01-01	-119000000
1980-04-01	-6000000
1980-07-01	0
1980-10-01	-368000000
1981-01-01	82000000
1981-04-01	133000000
1981-07-01	-118000000
1981-10-01	-116000000
1982-01-01	32000000
1982-04-01	-285000000
1982-07-01	-206000000
1982-10-01	-335000000
1983-01-01	54000000
1983-04-01	14000000
1983-07-01	-433000000
1983-10-01	-182000000
1984-01-01	218000000
1984-04-01	-27000000
1984-07-01	218000000
1984-10-01	-112000000
1985-01-01	-640000000
1985-04-01	-27000000
1985-07-01	-442000000
1985-10-01	0
1986-01-01	-112000000
1986-04-01	26000000
1986-07-01	-396000000
1986-10-01	-200000000
1987-01-01	24000000
1987-04-01	5000000
1987-07-01	-55000000
1987-10-01	-86000000
1988-01-01	-7000000
1988-04-01	-104000000
1988-07-01	-447000000
1988-10-01	-904000000
1989-01-01	455000000
1989-04-01	192000000
1989-07-01	2000000
1989-10-01	-1612000000
1990-01-01	-145000000
1990-04-01	-576000000
1990-07-01	-3956000000
1990-10-01	2251000000
1991-01-01	-240000000
1991-04-01	-1589000000
1991-07-01	-1127000000
1991-10-01	-50000000
1992-01-01	-144000000
1992-04-01	-1322000000
1992-07-01	-1538000000
1992-10-01	-296000000
1993-01-01	-2039000000
1993-04-01	271000000
1993-07-01	-1126000000
1993-10-01	-1697000000
1994-01-01	-581000000
1994-04-01	-2088000000
1994-07-01	-2303000000
1994-10-01	-2397000000
1995-01-01	-4151000000
1995-04-01	-2785000000
1995-07-01	-4040000000
1995-10-01	-3015000000
1996-01-01	-3145000000
1996-04-01	-2217000000
1996-07-01	-3397000000
1996-10-01	-4727000000
1997-01-01	-1371000000
1997-04-01	-2861000000
1997-07-01	-1934000000
1997-10-01	-7403000000
1998-01-01	-1070000000
1998-04-01	1587000000
1998-07-01	3049000000
1998-10-01	3128000000
1999-01-01	1136000000
1999-04-01	-1927000000
1999-07-01	-3586000000
1999-10-01	1772000000
2000-01-01	-2619000000
2000-04-01	1209000000
2000-07-01	999000000
2000-10-01	-1989000000
2001-01-01	1323000000
2001-04-01	-477000000
2001-07-01	3307000000
2001-10-01	2638000000
2002-01-01	904000000
2002-04-01	2751000000
2002-07-01	-579000000
2002-10-01	-1665000000
2003-01-01	1149000000
2003-04-01	-2770000000
2003-07-01	-2111000000
2003-10-01	-1400000000
2004-01-01	-7206000000
2004-04-01	-4270000000
2004-07-01	-3671000000
2004-10-01	7008000000
2005-01-01	1045000000
2005-04-01	866000000
2005-07-01	-1178000000
2005-10-01	-3392000000
2006-01-01	-1802000000
2006-04-01	-1910000000
2006-07-01	-1535000000
2006-10-01	-2699000000
2007-01-01	32000000
2007-04-01	-2895000000
2007-07-01	-4686000000
2007-10-01	-7287000000
2008-01-01	-4557000000
2008-04-01	-5661000000
2008-07-01	-5009000000
2008-10-01	1485000000
2009-01-01	4407000000
2009-04-01	-993000000
2009-07-01	-2556000000
2009-10-01	830000000
2010-01-01	-5904000000
2010-04-01	-6200000000
2010-07-01	-4227000000
2010-10-01	351000000
2011-01-01	-8102000000
2011-04-01	-4407000000
2011-07-01	-15876000000
2011-10-01	1270000000
2012-01-01	-2377000000
2012-04-01	-5196000000
2012-07-01	-5661000000
2012-10-01	-787000000
2013-01-01	-932000000
2013-04-01	-10264000000
2013-07-01	-13672000000
2013-10-01	-11157000000