Year National currency, Sum Over Component Sub-periods 1987-01-01 229000000 1988-01-01 350000000 1989-01-01 555000000 1990-01-01 848000000 1991-01-01 1016000000 1992-01-01 1122000000 1993-01-01 1544000000 1994-01-01 1944000000 1995-01-01 2518000000 1996-01-01 2686000000 1997-01-01 1169000000 1998-01-01 488000000 1999-01-01 493000000 2000-01-01 532000000 2001-01-01 2013000000 2002-01-01 2528000000 2003-01-01 1832000000 2004-01-01 1449000000 2005-01-01 1050000000 2006-01-01 1001000000 2007-01-01 893000000 2008-01-01 1074000000 2009-01-01 1984000000 2010-01-01 6493000000 2011-01-01 15084000000 2012-01-01 1238000000 2013-01-01 1540000000