Year	US Dollars, Sum Over Component Sub-periods
1994-01-01	-93000000
1995-01-01	-738000000
1996-01-01	4583000000
1997-01-01	45931000000
1998-01-01	8876000000
1999-01-01	-1199000000
2000-01-01	-9923000000
2001-01-01	-730000000
2002-01-01	3756000000
2003-01-01	-2329000000
2004-01-01	4443000000
2005-01-01	-713000000
2006-01-01	9455000000
2007-01-01	15545000000
2008-01-01	-27594000000
2009-01-01	8195000000
2010-01-01	1810000000
2011-01-01	-7279000000