Year US Dollars, Sum Over Component Sub-periods 1994-01-01 7844000000 1995-01-01 6963000000 1996-01-01 10847000000 1997-01-01 -80000000 1998-01-01 219000000 1999-01-01 24616000000 2000-01-01 46839000000 2001-01-01 33935000000 2002-01-01 29116000000 2003-01-01 35410000000 2004-01-01 59512000000 2005-01-01 84602000000 2006-01-01 94686000000 2007-01-01 77768000000 2008-01-01 103530000000 2009-01-01 48605000000 2010-01-01 71080000000 2011-01-01 98834000000