Quarterly 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