Year	US Dollars, Sum Over Component Sub-periods
1960-01-01	-1134300000.000000
1961-01-01	-403500000.000000
1962-01-01	-292000000.000000
1963-01-01	-344400000.000000
1964-01-01	-1538700000.000000
1965-01-01	-735400000.000000
1966-01-01	-310000000.000000
1967-01-01	-1647800000.000000
1968-01-01	-1694700000.000000
1969-01-01	-511500000.000000
1970-01-01	-43100000.000000
1971-01-01	500900000.000000
1972-01-01	-1838200000.000000
1973-01-01	-6302400000.000000
1974-01-01	-12257900000.000000
1975-01-01	-7182800000.000000
1976-01-01	-7059700000.000000
1977-01-01	-3961400000.000000
1978-01-01	-2942000000.000000
1979-01-01	-7045200000.000000
1980-01-01	3089000000.000000
1981-01-01	6505300000.000000
1982-01-01	3281300000.000000
1983-01-01	-2452300000.000000
1984-01-01	-7196900000.000000
1985-01-01	-4383300000.000000
1986-01-01	-14097200000.000000
1987-01-01	-19126100000.000000
1988-01-01	-38340200000.000000
1989-01-01	-40437400000.000000
1990-01-01	-33225600000.000000
1991-01-01	-18033300000.000000
1992-01-01	-22905600000.000000
1993-01-01	-19617500000.000000
1994-01-01	-17031400000.000002
1995-01-01	-18972800000.000000
1996-01-01	-21413200000.000000
1997-01-01	-19932800000.000000
1998-01-01	-36054900000.000000
1999-01-01	-47122800000.000000
2000-01-01	-50356400000.000000
2001-01-01	-59452200000.000000
2002-01-01	-71441800000.000000
2003-01-01	-79383800000.000000
2004-01-01	-111916300000.000000
2005-01-01	-125701900000.000000
2006-01-01	-141414300000.000000
2007-01-01	-181161300000.000000
2008-01-01	-172735200000.000000
2009-01-01	-129317300000.000000
2010-01-01	-152263700000.000000
2011-01-01	-160452900000.000000
2012-01-01	-172245300000.000000
2013-01-01	-168645100000.000000