Year US Dollars, Sum Over Component Sub-periods 1985-01-01 -9546850000.000000 1986-01-01 -12841270000.000000 1987-01-01 -20321250000.000000 1988-01-01 -30280670000.000000 1989-01-01 -36755430000.000000 1990-01-01 -42749250000.000000 1991-01-01 -41868080000.000000 1992-01-01 -43978610000.000000 1993-01-01 -42997770000.000000 1994-01-01 -47908330000.000000 1995-01-01 -57298440000.000000 1996-01-01 -60019090000.000000 1997-01-01 -52313880000.000000 1998-01-01 -47539050000.000000 1999-01-01 -51922060000.000000 2000-01-01 -45829400000.000000 2001-01-01 -42715980000.000000 2002-01-01 -40568460000.000000 2003-01-01 -31235250000.000000 2004-01-01 -34270050000.000004 2005-01-01 -23987290000.000000 2006-01-01 -18204730000.000000 2007-01-01 -21205870000.000000 2008-01-01 -20679350000.000000 2009-01-01 -20445320000.000000 2010-01-01 -16115420000.000000 2011-01-01 -22099760000.000000 2012-01-01 -31196450000.000000 2013-01-01 -16342540000.000000