Year	US Dollars, Sum Over Component Sub-periods
1960-01-01	-943110000.0000000
1961-01-01	-748500000.0000000
1962-01-01	-875390000.0000000
1963-01-01	-866790000.0000000
1964-01-01	-1224220000.0000000
1965-01-01	-1334030000.0000000
1966-01-01	-1270970000.0000000
1967-01-01	-1135280000.0000000
1968-01-01	-697000000.0000000
1969-01-01	-230400000.0000000
1970-01-01	-408020000.0000000
1971-01-01	-682250000.0000000
1972-01-01	-305750000.0000000
1973-01-01	-495740000.0000000
1974-01-01	-1363560000.0000000
1975-01-01	-257050000.0000000
1976-01-01	791590000.0000000
1977-01-01	939970000.0000000
1978-01-01	-891510000.0000000
1979-01-01	-2219110000.0000000
1980-01-01	-5644450000.0000000
1981-01-01	-5703050000.0000000
1982-01-01	-4818340000.0000000
1983-01-01	-4102810000.0000005
1984-01-01	-4051610000.0000000
1985-01-01	-5613800000.0000000
1986-01-01	-5431010000.0000000
1987-01-01	-5778640000.0000000
1988-01-01	-6669780000.0000000
1989-01-01	-6097240000.0000000
1990-01-01	-5199300000.0000000
1991-01-01	-2652750000.0000000
1992-01-01	-2911210000.0000000
1993-01-01	-2088429999.9999998
1994-01-01	-4150479999.9999995
1995-01-01	-6713400000.0000000
1996-01-01	-10045290000.0000000
1997-01-01	-10061630000.0000000
1998-01-01	-10709250000.0000000
1999-01-01	-8708010000.0000000
2000-01-01	-10570070000.0000000
2001-01-01	-6431940000.0000000
2002-01-01	-3552060000.0000000
2003-01-01	-7188140000.0000000
2004-01-01	-17635640000.0000000
2005-01-01	-32542760000.0000000
2006-01-01	-42875990000.0000000
2007-01-01	-54198270000.0000000
2008-01-01	-94368130000.0000000
2009-01-01	-79389520000.0000000
2010-01-01	-98051730000.0000000