Year	US Dollars, Sum Over Component Sub-periods
1984-01-01	-1625000000
1985-01-01	127000000
1986-01-01	-313000000
1987-01-01	-945000000
1988-01-01	-1428000000
1989-01-01	371000000
1990-01-01	-409000000
1991-01-01	-2563000000
1992-01-01	-2438000000
1993-01-01	-3291000000
1994-01-01	2423000000
1995-01-01	-383000000
1996-01-01	331000000
1997-01-01	-1750000000
1998-01-01	-1464000000
1999-01-01	-2304000000
2000-01-01	-1939000000
2001-01-01	-601000000
2002-01-01	-777000000
2003-01-01	-986000000
2004-01-01	-6983000000
2005-01-01	-553000000
2006-01-01	-13479000000
2007-01-01	-4969000000
2008-01-01	-12056000000
2009-01-01	10963000000
2010-01-01	7024000000
2011-01-01	11197000000
2012-01-01	-707000000
2013-01-01	2382000000