Quarter	Dollars
1985-01-01	70000000
1985-04-01	-53000000
1985-07-01	102000000
1985-10-01	-1247000000
1986-01-01	-567000000
1986-04-01	6000000
1986-07-01	-2579000000
1986-10-01	-1303000000
1987-01-01	-334000000
1987-04-01	-513000000
1987-07-01	-263000000
1987-10-01	-1962000000
1988-01-01	-323000000
1988-04-01	-424000000
1988-07-01	-7613000000
1988-10-01	-1819000000
1989-01-01	-493000000
1989-04-01	-255000000
1989-07-01	-297000000
1989-10-01	-478000000
1990-01-01	-5441000000
1990-04-01	-1478000000
1990-07-01	-659000000
1990-10-01	-1060000000
1991-01-01	397000000
1991-04-01	-71000000
1991-07-01	-183000000
1991-10-01	-4407000000
1992-01-01	-163000000
1992-04-01	-250000000
1992-07-01	-493000000
1992-10-01	-763000000
1993-01-01	-18000000
1993-04-01	364000000
1993-07-01	670000000
1993-10-01	-99000000
1994-01-01	486000000
1994-04-01	12000000
1994-07-01	622000000
1994-10-01	31000000
1995-01-01	2107000000
1995-04-01	2967000000
2000-01-01	2494000000
2000-04-01	1698000000
2000-07-01	1716000000
2000-10-01	4313000000
2001-01-01	2625000000
2001-04-01	1259000000
2001-07-01	657000000
2001-10-01	-1368000000
2002-01-01	2590000000
2002-04-01	785000000
2002-07-01	2603000000
2002-10-01	1202000000
2003-01-01	2563000000
2003-04-01	1472000000
2003-07-01	2175000000
2003-10-01	2476000000
2004-01-01	6588000000
2004-04-01	3124000000
2004-07-01	1974000000
2004-10-01	-3689000000
2005-01-01	4664000000
2005-04-01	4412000000
2005-07-01	1349000000
2005-10-01	4755000000
2006-01-01	4034000000
2006-04-01	3422000000
2006-07-01	1179000000
2006-10-01	4626000000
2007-01-01	6915000000
2007-04-01	11460000000
2007-07-01	6562000000
2007-10-01	13130000000
2008-01-01	15834000000
2008-04-01	15498000000
2008-07-01	4492000000
2008-10-01	3215000000