Year	US Dollars, Sum Over Component Sub-periods
1995-01-01	-79000000
1996-01-01	242000000
1997-01-01	1284000000
1998-01-01	802000000
1999-01-01	1387000000
2000-01-01	2074000000
2001-01-01	1793000000
2002-01-01	2019000000
2003-01-01	1815000000
2004-01-01	3629000000
2005-01-01	4974000000
2006-01-01	6271000000
2007-01-01	6126000000
2008-01-01	6864000000
2009-01-01	12242000000
2010-01-01	10791000000
2011-01-01	9312000000
2012-01-01	9852000000
2013-01-01	10485000000