Year	US Dollars, Sum Over Component Sub-periods
1984-01-01	0
1985-01-01	0
1986-01-01	0
1987-01-01	-25000000
1988-01-01	-6000000
1989-01-01	-59000000
1990-01-01	-134000000
1991-01-01	-91000000
1992-01-01	-754000000
1993-01-01	-563000000
1994-01-01	35000000
1995-01-01	-466000000
1996-01-01	-1380000000
1997-01-01	-710000000
1998-01-01	-1622000000
1999-01-01	-759000000
2000-01-01	-593000000
2001-01-01	-788000000
2002-01-01	-2096000000
2003-01-01	-1386000000
2004-01-01	-1388000000
2005-01-01	-1233000000
2006-01-01	-3987000000
2007-01-01	-1947000000
2008-01-01	-1244000000
2009-01-01	-2711000000
2010-01-01	-3544000000
2011-01-01	2688000000
2012-01-01	2657000000
2013-01-01	2601000000