Year	US Dollars, Sum Over Component Sub-periods
1975-01-01	-1771200000.00000000
1976-01-01	-712430000.00000000
1977-01-01	385970000.00000000
1978-01-01	1041010000.00000000
1979-01-01	313560000.00000000
1980-01-01	-732100000.00000000
1981-01-01	428200000.00000000
1982-01-01	260670000.00000003
1983-01-01	246810000.00000000
1984-01-01	1626280000.00000000
1985-01-01	977790000.00000000
1986-01-01	1746050000.00000000
1987-01-01	1572850000.00000000
1988-01-01	1315220000.00000000
1989-01-01	-73490000.00000000
1990-01-01	908380000.00000000
1991-01-01	2479360000.00000000
1992-01-01	4001530000.00000000
1993-01-01	6438610000.00000000
1994-01-01	7734240000.00000000
1995-01-01	12578690000.00000000
1996-01-01	11625410000.00000000
1997-01-01	11823410000.00000000
1998-01-01	12757400000.00000000
1999-01-01	11806350000.00000000
2000-01-01	13469740000.00000000
2001-01-01	12265730000.00000000
2002-01-01	12315000000.00000000
2003-01-01	12388650000.00000000
2004-01-01	12144930000.00000000
2005-01-01	9137520000.00000000
2006-01-01	10826990000.00000000
2007-01-01	12499610000.00000000
2008-01-01	9926020000.00000000
2009-01-01	4213470000.00000050
2010-01-01	3388030000.00000000
2011-01-01	-1747960000.00000000
2012-01-01	-117930000.00000000
2013-01-01	178060000.00000000