Quarter	US Dollars, Sum Over Component Sub-periods
1980-01-01	-1686000000
1980-04-01	-1384000000
1980-07-01	-1485000000
1980-10-01	-1453000000
1981-01-01	-1285000000
1981-04-01	-1165000000
1981-07-01	-1202000000
1981-10-01	-1548000000
1982-01-01	-862000000
1982-04-01	-1039000000
1982-07-01	-1200000000
1982-10-01	-1600000000
1983-01-01	-1698000000
1983-04-01	-568000000
1983-07-01	-456000000
1983-10-01	-795000000
1984-01-01	-708000000
1984-04-01	-855000000
1984-07-01	-521000000
1984-10-01	277000000
1985-01-01	-1028000000
1985-04-01	-380000000
1985-07-01	-110000000
1985-10-01	-174000000
1986-01-01	-336000000
1986-04-01	944000000
1986-07-01	1372000000
1986-10-01	1433000000
1987-01-01	1429000000
1987-04-01	1732000000
1987-07-01	1687000000
1987-10-01	2357000000
1988-01-01	2154000000
1988-04-01	2262000000
1988-07-01	2825000000
1988-10-01	3932000000
1989-01-01	1049000000
1989-04-01	854000000
1989-07-01	941000000
1989-10-01	1079000000
1990-01-01	-1001000000
1990-04-01	-342000000
1990-07-01	709000000
1990-10-01	-1664000000
1991-01-01	-3480000000
1991-04-01	-1610000000
1991-07-01	-1491000000
1991-10-01	133000000
1992-01-01	-1904000000
1992-04-01	-22000000
1992-07-01	649000000
1992-10-01	865000000
1993-01-01	-325000000
1993-04-01	507000000
1993-07-01	1011000000
1993-10-01	2539000000
1994-01-01	-1135000000
1994-04-01	-524000000
1994-07-01	-1132000000
1994-10-01	-323000000
1995-01-01	-2680000000
1995-04-01	-1757000000
1995-07-01	-676000000
1995-10-01	692000000
1996-01-01	-3059000000
1996-04-01	-2872000000
1996-07-01	-5822000000
1996-10-01	-3709000000
1997-01-01	-5458000000
1997-04-01	-902000000
1997-07-01	115000000
1997-10-01	2384000000
1998-01-01	9465000000
1998-04-01	11770000000
1998-07-01	11050000000
1998-10-01	10953000000
1999-01-01	7142000000
1999-04-01	7421000000
1999-07-01	6473000000
1999-10-01	6858000000
2000-01-01	2206000000
2000-04-01	5450000000
2000-07-01	5889000000
2000-10-01	5111000000
2001-01-01	2044000000
2001-04-01	5175000000
2001-07-01	3248000000
2001-10-01	2562000000
2002-01-01	2934000000
2002-04-01	4355000000
2002-07-01	2894000000
2002-10-01	5020000000
2003-01-01	861000000
2003-04-01	5351000000
2003-07-01	8117000000
2003-10-01	9699000000
2004-01-01	8910000000
2004-04-01	11338000000
2004-07-01	9602000000
2004-10-01	9811000000
2005-01-01	7463000000
2005-04-01	8768000000
2005-07-01	8387000000
2005-10-01	8239000000
2006-01-01	4902000000
2006-04-01	7418000000
2006-07-01	8878000000
2006-10-01	10236000000
2007-01-01	7895000000
2007-04-01	8374000000
2007-07-01	13648000000
2007-10-01	7212000000
2008-01-01	1366000000
2008-04-01	4096000000
2008-07-01	-1208000000
2008-10-01	917000000
2009-01-01	2819000000
2009-04-01	13553000000
2009-07-01	10915000000
2009-10-01	10579000000
2010-01-01	4296000000
2010-04-01	12307000000
2010-07-01	11566000000
2010-10-01	11913000000
2011-01-01	5047000000
2011-04-01	8277000000
2011-07-01	7472000000
2011-10-01	10864000000
2012-01-01	3362000000
2012-04-01	9840000000
2012-07-01	12300000000
2012-10-01	14314000000
2013-01-01	9340000000
2013-04-01	15838000000
2013-07-01	16623000000
2013-10-01	18895000000