Year	US Dollars, Sum Over Component Sub-periods
1971-01-01	2433100000.0000000
1972-01-01	3150460000.0000000
1973-01-01	3238900000.0000000
1974-01-01	-13856880000.0000000
1975-01-01	-5332780000.0000000
1976-01-01	-1144070000.0000000
1977-01-01	994640000.0000000
1978-01-01	6892450000.0000000
1979-01-01	4120359999.9999995
1980-01-01	2356530000.0000000
1981-01-01	4220170000.0000000
1982-01-01	1429290000.0000000
1983-01-01	-6344360000.0000000
1984-01-01	-12067700000.0000000
1985-01-01	-18511740000.0000000
1986-01-01	-36047610000.0000000
1987-01-01	-23332060000.0000000
1988-01-01	-70120330000.0000000
1989-01-01	-58763520000.0000000
1990-01-01	-55603530000.0000000
1991-01-01	6676500000.0000000
1992-01-01	47633380000.0000000
1993-01-01	11850810000.0000000
1994-01-01	34380570000.0000000
1995-01-01	41584590000.0000000
1996-01-01	15882180000.0000000
1997-01-01	1223630000.0000000
1998-01-01	18113710000.0000000
1999-01-01	-27259260000.0000000
2000-01-01	28755820000.0000000
2001-01-01	-15930160000.0000000
2002-01-01	-41217660000.0000000
2003-01-01	-72387580000.0000000
2004-01-01	-153099920000.0000000
2005-01-01	-164400680000.0000000
2006-01-01	-223740600000.0000000
2007-01-01	-290003010000.0000000
2008-01-01	-252621090000.0000000
2009-01-01	-227294930000.0000000
2010-01-01	-162127240000.0000000
2011-01-01	-239846960000.0000000
2012-01-01	-285957020000.0000000
2013-01-01	-331879110000.0000000