Year	US Dollars, Sum Over Component Sub-periods
1960-01-01	-713933315.09951400
1961-01-01	-24020463.51302010
1962-01-01	-164323634.20437800
1963-01-01	-6752607.74134475
1964-01-01	-272817633.81844500
1965-01-01	-915374393.11904000
1966-01-01	-511986727.59818200
1967-01-01	-719554883.67589500
1968-01-01	-1148693949.97285000
1969-01-01	-671074194.25263300
1970-01-01	-573162645.89417600
1971-01-01	-564989601.52338200
1972-01-01	788602927.66122200
1973-01-01	860760443.79121000
1974-01-01	-2332220574.03261000
1975-01-01	-545017378.89170300
1976-01-01	-1416415804.77510000
1977-01-01	-2570749473.27085000
1978-01-01	-4025795173.12331000
1979-01-01	-2105645095.62420000
1980-01-01	-3761974224.87685000
1981-01-01	-7855044753.24560000
1982-01-01	-7673994633.38474000
1983-01-01	-5638904971.68252000
1984-01-01	-8137363557.58380000
1985-01-01	-8516463822.55160000
1986-01-01	-9116815952.10740000
1987-01-01	-7251186719.26738000
1988-01-01	-10505467206.52080000
1989-01-01	-18370875064.12360000
1990-01-01	-15580292785.04110000
1991-01-01	-10664068067.70470000
1992-01-01	-10391409621.32760000
1993-01-01	-9352770675.03577000
1994-01-01	-15925693096.03270000
1995-01-01	-18662002006.64710000
1996-01-01	-14417268769.47950000
1997-01-01	-11904103210.13270000
1998-01-01	-17774333453.77960000
1999-01-01	-21799199805.87730000
2000-01-01	-15469913624.12020000
2001-01-01	-7978867696.23738000
2002-01-01	-15994189529.83260000
2003-01-01	-29314526936.66860000
2004-01-01	-41303618509.84540000
2005-01-01	-43235179754.62240000
2006-01-01	-45319890070.16930000
2007-01-01	-64147919709.81180000
2008-01-01	-51919957739.16700000
2009-01-01	-48908307041.79850000
2010-01-01	-43890031645.94820000
2011-01-01	-41221969160.87860000
2012-01-01	-64217542312.64660000
2013-01-01	-43802828897.85920000