Year US Dollars, Sum Over Component Sub-periods 1995-01-01 396000000 1996-01-01 -60000000 1997-01-01 -167000000 1998-01-01 76000000 1999-01-01 823000000 2000-01-01 583000000 2001-01-01 -147000000 2002-01-01 3000000 2003-01-01 53000000 2004-01-01 869000000 2005-01-01 1207000000 2006-01-01 1369000000 2007-01-01 2628000000 2008-01-01 3791000000 2009-01-01 225000000 2010-01-01 702000000 2011-01-01 -659000000 2012-01-01 -1274000000 2013-01-01 -3746000000