Year	National Currency Units per US Dollar
1991-01-01	1.05774069271027
1992-01-01	1.36285346413952
1993-01-01	1.81354719189252
1994-01-01	2.27277253768837
1995-01-01	2.42503080215839
1996-01-01	2.69549900332333
1997-01-01	3.27686117756513
1998-01-01	3.49198788349332
1999-01-01	3.96436807516155
2000-01-01	4.34567309743397
2001-01-01	4.09719836564402
2002-01-01	4.08162346454080
2003-01-01	3.88841175732480
2004-01-01	3.65086631062174
2005-01-01	3.23403139312378
2006-01-01	3.10347551916682
2007-01-01	2.76527845771379
2008-01-01	2.41008694318966
2009-01-01	3.11913786859276
2010-01-01	3.01451361832612
2011-01-01	2.96210218175544
2012-01-01	3.25184110750361
2013-01-01	3.16028084148943
2014-01-01	3.15426586807516
2015-01-01	3.77023783714474
2016-01-01	3.94410796317209
2017-01-01	3.77932822722567