Year National currency, Sum Over Component Sub-periods 1975-01-01 -1327000000 1976-01-01 -739000000 1977-01-01 -85000000 1978-01-01 450000000 1979-01-01 -108000000 1980-01-01 -909000000 1981-01-01 -302000000 1982-01-01 -717000000 1983-01-01 -983000000 1984-01-01 41000000 1985-01-01 -768000000 1986-01-01 -575000000 1987-01-01 -1272000000 1988-01-01 -1903000000 1989-01-01 -4164000000 1990-01-01 -4488000000 1991-01-01 -4565000000 1992-01-01 -3837000000 1993-01-01 -1078000000 1994-01-01 962000000 1995-01-01 4049000000 1996-01-01 3878000000 1997-01-01 5611000000 1998-01-01 6036000000 1999-01-01 6538000000 2000-01-01 10280000000 2001-01-01 11636000000 2002-01-01 12150000000 2003-01-01 7027000000 2004-01-01 9438000000 2005-01-01 5276000000 2006-01-01 6891000000 2007-01-01 7668000000 2008-01-01 4855000000 2009-01-01 3048000000 2010-01-01 2709000000 2011-01-01 -2831000000 2012-01-01 -2724000000 2013-01-01 -2029000000