Year	National Currency
1988-01-01	-422000000
1989-01-01	1120000000
1990-01-01	600000000
1991-01-01	-551000000
1992-01-01	761000000
1993-01-01	1090000000
1994-01-01	1316000000
1995-01-01	1227000000
1996-01-01	886000000
1997-01-01	617000000
1998-01-01	367000000
1999-01-01	1379000000
2000-01-01	932000000
2001-01-01	949000000
2002-01-01	1385000000
2003-01-01	1211000000
2004-01-01	1515000000
2005-01-01	1389000000
2006-01-01	6000000
2007-01-01	849000000
2008-01-01	1401000000
2009-01-01	-1897000000
2010-01-01	994000000
2011-01-01	601000000
2012-01-01	822000000
2013-01-01	329000000
2014-01-01	1162000000
2015-01-01	437000000
2016-01-01	486000000
2017-01-01	269000000