Year	National currency, Monthly Level
1981-01-01	2781360000.0000000
1982-01-01	3138270000.0000000
1983-01-01	3418440000.0000000
1984-01-01	4181969999.9999995
1985-01-01	4628040000.0000000
1986-01-01	4663260000.0000000
1987-01-01	4849260000.0000000
1988-01-01	5316423689.6967990
1989-01-01	6074159826.8711600
1990-01-01	6303560494.6963210
1991-01-01	6777111495.0706410
1992-01-01	6528375132.3131695
1993-01-01	6597116006.7327900
1994-01-01	6974112479.2079310
1995-01-01	7313057295.6303810
1996-01-01	7311520355.7767900
1997-01-01	8307606117.0206200
1998-01-01	9039834010.4958100
1999-01-01	10398900000.0000000
2000-01-01	12268100000.0000000
2001-01-01	13808300000.0000000
2002-01-01	13389800000.0000000
2003-01-01	14296200000.0000000
2004-01-01	16016400000.0000000
2005-01-01	18012600000.0000000
2006-01-01	21722800000.0000000
2007-01-01	20465900000.0000000
2008-01-01	21860500000.0000000
2009-01-01	18156900000.0000000
2010-01-01	18615100000.0000000
2011-01-01	20738100000.0000000
2012-01-01	21164200000.0000000
2013-01-01	20045500000.0000000
2014-01-01	20094800000.0000000
2015-01-01	20945500000.0000000
2016-01-01	19700700000.0000000
2017-01-01	20176200000.0000000