Year	US Dollars, Sum Over Component Sub-periods
1980-01-01	-728700000.00000000
1981-01-01	-1190400000.00000000
1982-01-01	-1014500000.00000000
1983-01-01	-1062200000.00000000
1984-01-01	-1558300000.00000000
1985-01-01	-2278400000.00000000
1986-01-01	-2409400000.00000000
1987-01-01	-1738400000.00000000
1988-01-01	-1392300000.00000000
1989-01-01	-618000000.00000000
1990-01-01	-136100000.00000000
1991-01-01	-215200000.00000000
1992-01-01	-443600000.00000000
1993-01-01	-407200000.00000000
1994-01-01	-527299999.99999994
1995-01-01	-1376700000.00000000
1996-01-01	-1929600000.00000000
1997-01-01	-2529800000.00000000
1998-01-01	-5734900000.00000000
1999-01-01	-5199200000.00000000
2000-01-01	-2505100000.00000000
2001-01-01	-1498700000.00000000
2002-01-01	187300000.00000000
2003-01-01	388400000.00000000
2004-01-01	1241000000.00000000
2005-01-01	-1636900000.00000000
2006-01-01	142200000.00000000
2007-01-01	550400000.00000000
2008-01-01	4617300000.00000000
2009-01-01	1568000000.00000000
2010-01-01	533500000.00000000
2011-01-01	3549000000.00000000
2012-01-01	5273900000.00000000
2013-01-01	4424000000.00000000