Year US Dollars, Sum Over Component Sub-periods 1982-01-01 -947420000.0000000 1983-01-01 -1236630000.0000000 1984-01-01 -1232290000.0000000 1985-01-01 -1419740000.0000000 1986-01-01 -2879600000.0000000 1987-01-01 -4142529999.9999995 1988-01-01 -5786040000.0000000 1989-01-01 -8486280000.0000010 1990-01-01 -12749580000.0000000 1991-01-01 -921030000.0000000 1992-01-01 -410630000.0000000 1993-01-01 2394260000.0000000 1994-01-01 -424360000.0000000 1995-01-01 3620600000.0000000 1996-01-01 437820000.0000000 1997-01-01 -1606720000.0000000 1998-01-01 -4644810000.0000000 1999-01-01 38542580000.0000000 2000-01-01 -17443440000.0000000 2001-01-01 3471600000.0000000 2002-01-01 1758030000.0000000 2003-01-01 -15923600000.0000000 2004-01-01 -10273780000.0000000 2005-01-01 -16456310000.0000020 2006-01-01 53559480000.0000000 2007-01-01 67018220000.0000000 2008-01-01 68527050000.0000000 2009-01-01 36617770000.0000000 2010-01-01 20754840000.0000000 2011-01-01 43309780000.0000000 2012-01-01 45492310000.0000000 2013-01-01 38899830000.0000000