Year	US Dollars, Sum Over Component Sub-periods
1960-01-01	-575600000.000000
1961-01-01	241000000.000000
1962-01-01	550300000.000000
1963-01-01	476000000.000000
1964-01-01	-913200000.000000
1965-01-01	-92300000.000000
1966-01-01	449700000.000000
1967-01-01	-677200000.000000
1968-01-01	-552900000.000000
1969-01-01	1171300000.000000
1970-01-01	1962300000.000000
1971-01-01	2744100000.000000
1972-01-01	354700000.000000
1973-01-01	-2694400000.000000
1974-01-01	-7795400000.000000
1975-01-01	-3751900000.000000
1976-01-01	-1746100000.000000
1977-01-01	-498900000.000000
1978-01-01	1574600000.000000
1979-01-01	-2122500000.000000
1980-01-01	4044300000.000000
1981-01-01	9735800000.000000
1982-01-01	3899500000.000000
1983-01-01	1906700000.000000
1984-01-01	-1721700000.000000
1985-01-01	-731400000.000000
1986-01-01	-5297600000.000000
1987-01-01	-11446600000.000000
1988-01-01	-33517600000.000000
1989-01-01	-39629500000.000000
1990-01-01	-35211300000.000000
1991-01-01	-14897000000.000000
1992-01-01	-18266500000.000000
1993-01-01	-14144800000.000000
1994-01-01	-5094400000.000000
1995-01-01	-8136400000.000000
1996-01-01	-6886500000.000000
1997-01-01	-1575800000.000000
1998-01-01	-5862000000.000000
1999-01-01	-40521800000.000000
2000-01-01	-42878100000.000000
2001-01-01	-34435200000.000000
2002-01-01	-33265699999.999996
2003-01-01	-31016900000.000000
2004-01-01	-44648900000.000000
2005-01-01	-42828300000.000000
2006-01-01	-70561800000.000000
2007-01-01	-62439500000.000000
2008-01-01	-25254000000.000000
2009-01-01	-31265500000.000000
2010-01-01	-61798200000.000000
2011-01-01	-36028600000.000000
2012-01-01	-94532100000.000000
2013-01-01	-113734300000.000000