Year	US Dollars, Sum Over Component Sub-periods
1994-01-01	954000000
1995-01-01	854000000
1996-01-01	-3264000000
1997-01-01	-5744000000
1998-01-01	-6901000000
1999-01-01	-12487000000
2000-01-01	-10343000000
2001-01-01	-5946000000
2002-01-01	-5544000000
2003-01-01	-5473000000
2004-01-01	-13258000000
2005-01-01	-7242000000
2006-01-01	-13147000000
2007-01-01	-26501000000
2008-01-01	-34957000000
2009-01-01	-17155000000
2010-01-01	-24030000000
2011-01-01	-25770000000
2012-01-01	-18263000000
2013-01-01	-7105000000