Year	US Dollars, Sum Over Component Sub-periods
1994-01-01	-7932000000
1995-01-01	-286000000
1996-01-01	-4260000000
1997-01-01	1206000000
1998-01-01	3431000000
1999-01-01	5850000000
2000-01-01	1156000000
2001-01-01	662000000
2002-01-01	396000000
2003-01-01	3321000000
2004-01-01	-1205000000
2005-01-01	-1732000000
2006-01-01	10104000000
2007-01-01	30124000000
2008-01-01	26815000000
2009-01-01	8105000000
2010-01-01	13293000000
2011-01-01	6577000000
2012-01-01	-3959000000
2013-01-01	3594000000