Quarter	US Dollars, Sum Over Component Sub-periods
1980-01-01	-456000000
1980-04-01	-428000000
1980-07-01	-338000000
1980-10-01	368000000
1981-01-01	-1035000000
1981-04-01	-224000000
1981-07-01	-255000000
1981-10-01	503000000
1982-01-01	-826000000
1982-04-01	-386000000
1982-07-01	-291000000
1982-10-01	-469000000
1983-01-01	8000000
1983-04-01	-523000000
1983-07-01	-765000000
1983-10-01	-184000000
1984-01-01	-383000000
1984-04-01	-259000000
1984-07-01	-291000000
1984-10-01	-432000000
1985-01-01	-343000000
1985-04-01	-292000000
1985-07-01	-51000000
1985-10-01	-465000000
1986-01-01	334000000
1986-04-01	-384000000
1986-07-01	-297000000
1986-10-01	-368000000
1987-01-01	-137000000
1987-04-01	-224000000
1987-07-01	414000000
1987-10-01	866000000
1988-01-01	161000000
1988-04-01	0
1988-07-01	-80000000
1988-10-01	-762000000
1989-01-01	891000000
1989-04-01	637000000
1989-07-01	-232000000
1989-10-01	-629000000
1990-01-01	-140000000
1990-04-01	182000000
1990-07-01	-728000000
1990-10-01	-1147000000
1991-01-01	95000000
1991-04-01	147000000
1991-07-01	492000000
1991-10-01	44000000
1992-01-01	1133000000
1992-04-01	794000000
1992-07-01	227000000
1992-10-01	-989000000
1993-01-01	819000000
1993-04-01	-117000000
1993-07-01	-431000000
1993-10-01	-933000000
1994-01-01	-60000000
1994-04-01	-540000000
1994-07-01	-585000000
1994-10-01	-555000000
1995-01-01	-430000000
1995-04-01	-346000000
1995-07-01	198000000
1995-10-01	-645000000
1996-01-01	198000000
1996-04-01	-1181000000
1996-07-01	1600000000
1996-10-01	448000000
1997-01-01	-77000000
1997-04-01	222000000
1997-07-01	-1170000000
1997-10-01	-4080000000
1998-01-01	14000000
1998-04-01	-2433000000
1998-07-01	-1521000000
1998-10-01	-2966000000
1999-01-01	-280000000
1999-04-01	-728000000
1999-07-01	-314000000
1999-10-01	-2849000000
2000-01-01	-283000000
2000-04-01	-974000000
2000-07-01	-492000000
2000-10-01	328000000
2001-01-01	1888000000
2001-04-01	-1107000000
2001-07-01	808000000
2001-10-01	1069000000
2002-01-01	-1218000000
2002-04-01	-6000000
2002-07-01	1542000000
2002-10-01	-850000000
2003-01-01	1765000000
2003-04-01	532000000
2003-07-01	1231000000
2003-10-01	-2765000000
2004-01-01	-1568000000
2004-04-01	3277000000
2004-07-01	432000000
2004-10-01	1013000000
2005-01-01	239000000
2005-04-01	-1611000000
2005-07-01	853000000
2005-10-01	1443000000
2006-01-01	1096000000
2006-04-01	1054000000
2006-07-01	-706000000
2006-10-01	-1375000000
2007-01-01	-1742000000
2007-04-01	-878000000
2007-07-01	2016000000
2007-10-01	2711000000
2008-01-01	-2040000000
2008-04-01	-1140000000
2008-07-01	1910000000
2008-10-01	-1174000000
2009-01-01	-175000000
2009-04-01	1379000000
2009-07-01	-1636000000
2009-10-01	2292000000
2010-01-01	-811000000
2010-04-01	-1917000000
2010-07-01	-1018000000
2010-10-01	1831000000
2011-01-01	-2307000000
2011-04-01	-1626000000
2011-07-01	2398000000
2011-10-01	2245000000
2012-01-01	-606000000
2012-04-01	-5832000000
2012-07-01	1571000000
2012-10-01	7614000000
2013-01-01	930000000
2013-04-01	-690000000
2013-07-01	662000000
2013-10-01	1246000000