Year	US Dollars, Sum Over Component Sub-periods
1960-01-01	-329978950.0275630
1961-01-01	-283585895.6794470
1962-01-01	-268998962.3925440
1963-01-01	-296422134.3123500
1964-01-01	-361830426.4210660
1965-01-01	-407542408.2490760
1966-01-01	-430696941.8274610
1967-01-01	-469475742.2607100
1968-01-01	-532888437.8669980
1969-01-01	-578833767.8354750
1970-01-01	-605824377.7493180
1971-01-01	-686064782.3864600
1972-01-01	-766685545.6523680
1973-01-01	-1293416585.5511500
1974-01-01	-1838251208.4265200
1975-01-01	-1777114711.6576500
1976-01-01	-2081222421.9643700
1977-01-01	-2174689706.8759700
1978-01-01	-2297818695.8016600
1979-01-01	-2363067292.6447600
1980-01-01	-2707684122.5203300
1981-01-01	-3140915669.1170100
1982-01-01	-3169237270.2303000
1983-01-01	-2807703000.2028700
1984-01-01	-3696906824.8564500
1985-01-01	-3458026063.8266900
1986-01-01	-2908438661.0888000
1987-01-01	-2629463947.2287500
1988-01-01	-2419943646.5742200
1989-01-01	-4453521850.5610100
1990-01-01	-3750146276.7686500
1991-01-01	-2709448803.5669100
1992-01-01	-2402569200.1835100
1993-01-01	-1380831961.4398900
1994-01-01	-1502474298.3401200
1995-01-01	-1012182998.1413700
1996-01-01	-34458903.8413846
1997-01-01	-313050573.9878710
1998-01-01	-1270489229.4165700
1999-01-01	-420090342.0090340
2000-01-01	598890835.6380590
2001-01-01	430407543.7576700
2002-01-01	934661495.2230530
2003-01-01	1322701840.6897900
2004-01-01	-605488388.0618980
2005-01-01	-552261733.9748880
2006-01-01	-152871038.5942890
2007-01-01	-1569622724.3887000
2008-01-01	-5863048016.7014600
2009-01-01	-2395928792.8714900
2010-01-01	-5085383192.4294100
2011-01-01	-10214697815.1896000
2012-01-01	-11635077427.4253000
2013-01-01	-11045229767.2175000