Year	National Currency
1988-01-01	21886445263.0
1989-01-01	21541455919.6
1990-01-01	21160462033.2
1991-01-01	20535172144.5
1992-01-01	21060482108.6
1993-01-01	22358026794.9
1994-01-01	23490072653.3
1995-01-01	24167295790.3
1996-01-01	24704827764.4
1997-01-01	24797293087.2
1998-01-01	24083071740.1
1999-01-01	24590381766.9
2000-01-01	25507284298.5
2001-01-01	25457060029.3
2002-01-01	26894502418.9
2003-01-01	27785400577.4
2004-01-01	28917518825.7
2005-01-01	28996126673.5
2006-01-01	27880257326.2
2007-01-01	28297168065.5
2008-01-01	28057649063.6
2009-01-01	25805132154.6
2010-01-01	25966824276.8