Year	National currency per current international dollar
1980	8.485
1981	8.327
1982	8.556
1983	9.18
1984	9.96
1985	10.571
1986	11.348
1987	12.081
1988	12.612
1989	13.036
1990	13.374
1991	13.546
1992	13.453
1993	13.413
1994	13.874
1995	14.363
1996	14.619
1997	14.978
1998	15.544
1999	15.812
2000	15.732
2001	15.765
2002	16.124
2003	16.525
2004	16.844
2005	17.174
2006	17.647
2007	18.422
2008	19.382
2009	20.577
2010	21.874
2011	23.145
2012	24.442
2013	25.551
2014	26.527
2015	27.909
2016	29.399
2017	30.56
2018	31.557
2019	32.741
2020	33.854
2021	34.99
2022	36.165
2023	37.38
2024	38.627