Year	US Dollars, Sum Over Component Sub-periods
1980-01-01	-12794300000.0000000
1981-01-01	-13066100000.0000000
1982-01-01	-9871900000.0000000
1983-01-01	-8066900000.0000000
1984-01-01	-8118000000.0000000
1985-01-01	-10838000000.0000000
1986-01-01	-4309600000.0000000
1987-01-01	-2616500000.0000000
1988-01-01	-1746400000.0000000
1989-01-01	-4858400000.0000000
1990-01-01	-6124700000.0000000
1991-01-01	-2081199999.9999998
1992-01-01	-2998400000.0000000
1993-01-01	-928200000.0000000
1994-01-01	-234900000.0000000
1995-01-01	-3210600000.0000000
1996-01-01	-5091600000.0000000
1997-01-01	-5282000000.0000000
1998-01-01	-3801400000.0000000
1999-01-01	-5351600000.0000000
2000-01-01	-9942000000.0000000
2001-01-01	-9474900000.0000000
2002-01-01	-9613900000.0000000
2003-01-01	-12725400000.0000000
2004-01-01	-13315400000.0000000
2005-01-01	-18323700000.0000000
2006-01-01	-29821400000.0000000
2007-01-01	-44630900000.0000000
2008-01-01	-50875100000.0000000
2009-01-01	-35869200000.0000000
2010-01-01	-29807600000.0000000
2011-01-01	-28691300000.0000000
2012-01-01	-5932000000.0000000
2013-01-01	1854100000.0000000