Year US Dollars, Sum Over Component Sub-periods 1993-01-01 100000000 1994-01-01 69190000 1995-01-01 92210000 1996-01-01 202680000 1997-01-01 174770000 1998-01-01 367350000 1999-01-01 196070000 2000-01-01 117730000 2001-01-01 211860000 2002-01-01 193370000 2003-01-01 245100000 2004-01-01 169210000 2005-01-01 15310000 2006-01-01 -54380000 2007-01-01 -449080000 2008-01-01 -1260040000 2009-01-01 -939400000 2010-01-01 -559300000 2011-01-01 -491520000 2012-01-01 -833510000 2013-01-01 -1424570000