Year	National Currency Units per US Dollar
1991-01-01	29.4744616657616
1992-01-01	28.2641088922170
1993-01-01	29.1541274905766
1994-01-01	28.7853299129872
1995-01-01	26.5400992707431
1996-01-01	27.1488882274052
1997-01-01	31.7046266819882
1998-01-01	32.2807410753498
1999-01-01	34.5883610895445
2000-01-01	38.6365984221093
2001-01-01	38.0283775827634
2002-01-01	32.7328041018224
2003-01-01	28.2082675591317
2004-01-01	25.6945777887571
2005-01-01	23.9545494933810
2006-01-01	22.5850063774390
2007-01-01	20.2889657451848
2008-01-01	17.0778683629776
2009-01-01	19.0504350194492
2010-01-01	19.0795065954577
2011-01-01	17.6722263143861
2012-01-01	19.5383039713909
2013-01-01	19.5604776726896
2014-01-01	20.7577731946797
2015-01-01	24.5929809272853
2016-01-01	24.4405997788444
2017-01-01	23.3854697542192