Quarter	US Dollars, Sum Over Component Sub-periods
1981-01-01	-750000000
1981-04-01	-744000000
1981-07-01	-728000000
1981-10-01	-851000000
1982-01-01	-673000000
1982-04-01	-674000000
1982-07-01	-796000000
1982-10-01	-850000000
1983-01-01	-750000000
1983-04-01	-970000000
1983-07-01	-934000000
1983-10-01	-996000000
1984-01-01	-1019000000
1984-04-01	-1202000000
1984-07-01	-856000000
1984-10-01	-984000000
1985-01-01	-656000000
1985-04-01	-1016000000
1985-07-01	-876000000
1985-10-01	-994000000
1986-01-01	-933000000
1986-04-01	-759000000
1986-07-01	-688000000
1986-10-01	-836000000
1987-01-01	-870000000
1987-04-01	-908000000
1987-07-01	-992000000
1987-10-01	-884000000
1988-01-01	-1041000000
1988-04-01	-1042000000
1988-07-01	-938000000
1988-10-01	-1071000000
1989-01-01	-1147000000
1989-04-01	-1137000000
1989-07-01	-1147000000
1989-10-01	-1116000000
1990-01-01	-1212000000
1990-04-01	-1013000000
1990-07-01	-1400000000
1990-10-01	-1565000000
1991-01-01	-1414000000
1991-04-01	-1293000000
1991-07-01	-1447000000
1991-10-01	-1427000000
1992-01-01	-1412000000
1992-04-01	-1150000000
1992-07-01	-1617000000
1992-10-01	-1485000000
1993-01-01	-1635000000
1993-04-01	-1441000000
1993-07-01	-982000000
1993-10-01	-929000000
1994-01-01	-1075000000
1994-04-01	-1097000000
1994-07-01	-1188000000
1994-10-01	-1333000000
1995-01-01	-1504000000
1995-04-01	-1402000000
1995-07-01	-1421000000
1995-10-01	-1547000000
1996-01-01	-1429000000
1996-04-01	-1398000000
1996-07-01	-1626000000
1996-10-01	-1555000000
1997-01-01	-1515000000
1997-04-01	-1811000000
1997-07-01	-1513000000
1997-10-01	-1493000000
1998-01-01	-2004000000
1998-04-01	-2117000000
1998-07-01	-2025000000
1998-10-01	-2043000000
1999-01-01	-1881000000
1999-04-01	-2314000000
1999-07-01	-2711000000
1999-10-01	-2091000000
2000-01-01	-2218000000
2000-04-01	-2187000000
2000-07-01	-1736000000
2000-10-01	-2302000000
2001-01-01	-1507000000
2001-04-01	-1961000000
2001-07-01	-1348000000
2001-10-01	-2119000000
2002-01-01	-1476000000
2002-04-01	-2390000000
2002-07-01	-1550000000
2002-10-01	-1632000000
2003-01-01	-1249000000
2003-04-01	-2026000000
2003-07-01	-1190000000
2003-10-01	-1753000000
2004-01-01	-2361000000
2004-04-01	-3141000000
2004-07-01	-2584000000
2004-10-01	-2832000000
2005-01-01	-2168000000
2005-04-01	-3464000000
2005-07-01	-3568000000
2005-10-01	-3726000000
2006-01-01	-2658000000
2006-04-01	-3873000000
2006-07-01	-3720000000
2006-10-01	-3539000000
2007-01-01	-3163000000
2007-04-01	-4023000000
2007-07-01	-3811000000
2007-10-01	-4527000000
2008-01-01	-3093000000
2008-04-01	-4425000000
2008-07-01	-4756000000
2008-10-01	-2881000000
2009-01-01	-2742000000
2009-04-01	-3776000000
2009-07-01	-4072000000
2009-10-01	-4551000000
2010-01-01	-4038000000
2010-04-01	-4329000000
2010-07-01	-5547000000
2010-10-01	-6876000000
2011-01-01	-5525000000
2011-04-01	-6776000000
2011-07-01	-7416000000
2011-10-01	-6959000000
2012-01-01	-6048000000
2012-04-01	-7101000000
2012-07-01	-6955000000
2012-10-01	-6695000000
2013-01-01	-6126000000
2013-04-01	-7130000000
2013-07-01	-6881000000
2013-10-01	-7090000000