Year US Dollars, Sum Over Component Sub-periods 1995-01-01 12304000000 1996-01-01 10952000000 1997-01-01 9922000000 1998-01-01 9828000000 1999-01-01 9478000000 2000-01-01 4859000000 2001-01-01 5572000000 2002-01-01 9191000000 2003-01-01 8769000000 2004-01-01 8614000000 2005-01-01 3543000000 2006-01-01 2755000000 2007-01-01 1830000000 2008-01-01 -16097000000 2009-01-01 -6292000000 2010-01-01 -5033000000 2011-01-01 -14415000000 2012-01-01 -13666000000 2013-01-01 -11002000000