Quarter	US Dollars, Sum Over Component Sub-periods
1960-01-01	-14000000
1960-04-01	-27000000
1960-07-01	-7000000
1960-10-01	-12000000
1961-01-01	33000000
1961-04-01	-19000000
1961-07-01	41000000
1961-10-01	-43000000
1962-01-01	37000000
1962-04-01	-24000000
1962-07-01	12000000
1962-10-01	-15000000
1963-01-01	39000000
1963-04-01	22000000
1963-07-01	-70000000
1963-10-01	-72000000
1964-01-01	5000000
1964-04-01	-60000000
1964-07-01	-30000000
1964-10-01	-65000000
1965-01-01	54000000
1965-04-01	-39000000
1965-07-01	-31000000
1965-10-01	119000000
1966-01-01	-74000000
1966-04-01	56000000
1966-07-01	18000000
1966-10-01	-7000000
1967-01-01	-33000000
1967-04-01	13000000
1967-07-01	-8000000
1967-10-01	-73000000
1968-01-01	-43000000
1968-04-01	-90000000
1968-07-01	0
1968-10-01	-68000000
1969-01-01	1000000
1969-04-01	-41000000
1969-07-01	-30000000
1969-10-01	48000000
1970-01-01	-1000000
1970-04-01	23000000
1970-07-01	-19000000
1970-10-01	-27000000
1971-01-01	-65000000
1971-04-01	11000000
1971-07-01	-26000000
1971-10-01	-45000000
1972-01-01	-67000000
1972-04-01	-25000000
1972-07-01	-72000000
1972-10-01	-88000000
1973-01-01	51000000
1973-04-01	22000000
1973-07-01	-91000000
1973-10-01	-66000000
1974-01-01	-98000000
1974-04-01	108000000
1974-07-01	-19000000
1974-10-01	-219000000
1975-01-01	-143000000
1975-04-01	139000000
1975-07-01	126000000
1975-10-01	-563000000
1976-01-01	38000000
1976-04-01	-69000000
1976-07-01	-6000000
1976-10-01	-252000000
1977-01-01	-35000000
1977-04-01	-810000000
1977-07-01	393000000
1977-10-01	-1000000
1978-01-01	91000000
1978-04-01	234000000
1978-07-01	17000000
1978-10-01	90000000
1979-01-01	382000000
1979-04-01	35000000
1979-07-01	307000000
1979-10-01	-421000000
1980-01-01	113000000
1980-04-01	115000000
1980-07-01	-298000000
1980-10-01	-301000000
1981-01-01	213000000
1981-04-01	-129000000
1981-07-01	-303000000
1981-10-01	-108000000
1982-01-01	95000000
1982-04-01	231000000
1982-07-01	-84000000
1982-10-01	129000000
1983-01-01	-64000000
1983-04-01	-241000000
1983-07-01	-250000000
1983-10-01	-291000000
1984-01-01	264000000
1984-04-01	-300000000
1984-07-01	238000000
1984-10-01	171000000
1985-01-01	128000000
1985-04-01	278000000
1985-07-01	98000000
1985-10-01	0
1986-01-01	58000000
1986-04-01	128000000
1986-07-01	45000000
1986-10-01	-34000000
1987-01-01	-231000000
1987-04-01	-197000000
1987-07-01	13000000
1987-10-01	6000000
1988-01-01	-556000000
1988-04-01	-80000000
1988-07-01	41000000
1988-10-01	502000000
1989-01-01	-327000000
1989-04-01	157000000
1989-07-01	288000000
1989-10-01	-409000000
1990-01-01	-446000000
1990-04-01	436000000
1990-07-01	-188000000
1990-10-01	-376000000
1991-01-01	260000000
1991-04-01	-139000000
1991-07-01	1563000000
1991-10-01	-1055000000
1992-01-01	-506000000
1992-04-01	-7000000
1992-07-01	815000000
1992-10-01	882000000
1993-01-01	-1659000000
1993-04-01	79000000
1993-07-01	448000000
1993-10-01	163000000
1994-01-01	110000000
1994-04-01	1561000000
1994-07-01	790000000
1994-10-01	-858000000
1995-01-01	-836000000
1995-04-01	846000000
1995-07-01	1594000000
1995-10-01	-775000000
1996-01-01	-1064000000
1996-04-01	59000000
1996-07-01	-598000000
1996-10-01	-317000000
1997-01-01	264000000
1997-04-01	311000000
1997-07-01	-1034000000
1997-10-01	-836000000
1998-01-01	1704000000
1998-04-01	103000000
1998-07-01	-639000000
1998-10-01	216000000
1999-01-01	15000000
1999-04-01	481000000
1999-07-01	-901000000
1999-10-01	410000000
2000-01-01	313000000
2000-04-01	-68000000
2000-07-01	-295000000
2000-10-01	382000000
2001-01-01	-324000000
2001-04-01	207000000
2001-07-01	-420000000
2001-10-01	-179000000
2002-01-01	198000000
2002-04-01	-126000000
2002-07-01	-50000000
2002-10-01	-212000000
2003-01-01	188000000
2003-04-01	203000000
2003-07-01	363000000
2003-10-01	-283000000
2004-01-01	320000000
2004-04-01	298000000
2004-07-01	248000000
2004-10-01	-274000000
2005-01-01	335000000
2005-04-01	266000000
2005-07-01	-604000000
2005-10-01	-538000000
2006-01-01	358000000
2006-04-01	91000000
2006-07-01	157000000
2006-10-01	294000000
2007-01-01	426000000
2007-04-01	35000000
2007-07-01	269000000
2007-10-01	608000000
2008-01-01	404000000
2008-04-01	193000000
2008-07-01	1189000000
2008-10-01	-640000000
2009-01-01	323000000
2009-04-01	622000000
2009-07-01	-713000000
2009-10-01	-658000000
2010-01-01	-823000000
2010-04-01	-342000000
2010-07-01	-1224000000
2010-10-01	-1207000000
2011-01-01	-804000000
2011-04-01	-1292000000