Year National currency, Sum Over Component Sub-periods 1975-01-01 -1093000000 1976-01-01 -462000000 1977-01-01 261000000 1978-01-01 719000000 1979-01-01 205000000 1980-01-01 -458000000 1981-01-01 310000000 1982-01-01 211000000 1983-01-01 231000000 1984-01-01 1642000000 1985-01-01 1019000000 1986-01-01 1489000000 1987-01-01 1163000000 1988-01-01 926000000 1989-01-01 -53000000 1990-01-01 584000000 1991-01-01 1686000000 1992-01-01 3019000000 1993-01-01 6195000000 1994-01-01 6794000000 1995-01-01 9239000000 1996-01-01 8979000000 1997-01-01 10315000000 1998-01-01 11469000000 1999-01-01 11081000000 2000-01-01 14616000000 2001-01-01 13696000000 2002-01-01 13067000000 2003-01-01 10966000000 2004-01-01 9775000000 2005-01-01 7352000000 2006-01-01 8626000000 2007-01-01 9131000000 2008-01-01 6789000000 2009-01-01 3033000000 2010-01-01 2558000000 2011-01-01 -1257000000 2012-01-01 -92000000 2013-01-01 134000000