Year	US Dollars, Sum Over Component Sub-periods
1998-01-01	0
1999-01-01	0
2000-01-01	0
2001-01-01	-100000000
2002-01-01	0
2003-01-01	0
2004-01-01	-100000000
2005-01-01	4100000000
2006-01-01	4000000000
2007-01-01	3100000000
2008-01-01	3100000000
2009-01-01	3900000000
2010-01-01	4600000000
2011-01-01	5400000000
2012-01-01	4300000000