Year	US Dollars, Sum Over Component Sub-periods
1960-01-01	-329978950.0275630
1961-01-01	-284702375.5836960
1962-01-01	-270119791.4025130
1963-01-01	-297544945.4271690
1964-01-01	-358480144.6949450
1965-01-01	-406422786.2483920
1966-01-01	-429584029.8330750
1967-01-01	-469475742.2607100
1968-01-01	-530663433.9510600
1969-01-01	-576611757.2103870
1970-01-01	-603597082.2428870
1971-01-01	-683793044.6964390
1972-01-01	-764300831.6690020
1973-01-01	-1294841053.1563800
1974-01-01	-1839694105.7643800
1975-01-01	-1783696617.9971300
1976-01-01	-2077545350.5474700
1977-01-01	-2178021713.5770000
1978-01-01	-2301256828.5135800
1979-01-01	-2358596020.5678500
1980-01-01	-2699703579.8434300
1981-01-01	-3137465377.2798300
1982-01-01	-3162138178.7449800
1983-01-01	-2801391529.1041500
1984-01-01	-3674113469.9960600
1985-01-01	-3453136913.6657600
1986-01-01	-2908438661.0888000
1987-01-01	-2617565920.3182100
1988-01-01	-2396517280.1988600
1989-01-01	-4429012854.0462900
1990-01-01	-3721280994.4219800
1991-01-01	-2718794415.9965700
1992-01-01	-2390824285.0588800
1993-01-01	-1357071332.8015500
1994-01-01	-1494439676.4238600
1995-01-01	-976615806.4057990
1996-01-01	-32892590.0304126
1997-01-01	-292279445.8559750
1998-01-01	-1240344156.2519600
1999-01-01	-410410841.0410840
2000-01-01	616266778.6449660
2001-01-01	434024413.8732800
2002-01-01	944980245.0250500
2003-01-01	1310376517.0148900
2004-01-01	-571645780.7097140
2005-01-01	-532456485.5840640
2006-01-01	-115971132.7267020
2007-01-01	-1503524539.2998300
2008-01-01	-5789561586.6388300
2009-01-01	-2374090900.2281300
2010-01-01	-5026677470.1502800
2011-01-01	-10152790555.7036000
2012-01-01	-11594703015.1404000
2013-01-01	-11025931733.2047000