Year US Dollars, Sum Over Component Sub-periods 1991-01-01 -1382640000.0000000 1992-01-01 -1250420000.0000000 1993-01-01 -1195480000.0000000 1994-01-01 -1451220000.0000000 1995-01-01 -1690370000.0000000 1996-01-01 -1967500000.0000000 1997-01-01 -2698940000.0000000 1998-01-01 -2953580000.0000000 1999-01-01 -2892610000.0000000 2000-01-01 -2574280000.0000000 2001-01-01 -2852520000.0000000 2002-01-01 -3612050000.0000000 2003-01-01 -4157560000.0000005 2004-01-01 -5353950000.0000000 2005-01-01 -6241290000.0000000 2006-01-01 -6657260000.0000000 2007-01-01 -10085950000.0000000 2008-01-01 -10874610000.0000000 2009-01-01 -6841550000.0000000 2010-01-01 -7274930000.0000000 2011-01-01 -8898850000.0000000 2012-01-01 -8238070000.0000000 2013-01-01 -7883400000.0000000