Year	US Dollars, Sum Over Component Sub-periods
1960-01-01	-89000000
1961-01-01	-134000000
1962-01-01	-170000000
1963-01-01	-188000000
1964-01-01	-212000000
1965-01-01	-258000000
1966-01-01	-268000000
1967-01-01	-276000000
1968-01-01	-299000000
1969-01-01	-325000000
1970-01-01	-335000000
1971-01-01	-356000000
1972-01-01	-361000000
1973-01-01	-411000000
1974-01-01	-314000000
1975-01-01	-254000000
1976-01-01	-160000000
1977-01-01	-150000000
1978-01-01	-101000000
1979-01-01	264000000
1980-01-01	534000000
1981-01-01	457000000
1982-01-01	-86000000
1983-01-01	-501000000
1984-01-01	-679000000
1985-01-01	-823000000
1986-01-01	-1062000000
1987-01-01	-1158000000
1988-01-01	-1774000000
1989-01-01	-2051000000
1990-01-01	-3268000000
1991-01-01	-3985000000
1992-01-01	-3912000000
1993-01-01	-3728000000
1994-01-01	-3549000000
1995-01-01	-3727000000
1996-01-01	-3258000000
1997-01-01	-3523000000
1998-01-01	-3632000000
1999-01-01	-3708000000
2000-01-01	-4881000000
2001-01-01	-4142000000
2002-01-01	-3908000000
2003-01-01	-4859000000
2004-01-01	-4053000000
2005-01-01	-6704000000
2006-01-01	-6279000000
2007-01-01	-6511000000
2008-01-01	-5564000000
2009-01-01	-7514000000
2010-01-01	-12924000000