Year	National currency per current international dollar
1980	3.906
1981	3.955
1982	4.026
1983	4.206
1984	4.381
1985	4.552
1986	4.765
1987	5.084
1988	5.315
1989	5.546
1990	5.916
1991	6.509
1992	6.935
1993	7.443
1994	8.014
1995	8.561
1996	9.044
1997	9.466
1998	10.111
1999	10.309
2000	10.438
2001	10.53
2002	10.741
2003	10.944
2004	11.275
2005	11.398
2006	11.773
2007	12.125
2008	12.925
2009	13.605
2010	14.656
2011	15.109
2012	16.001
2013	16.698
2014	16.934
2015	17.137
2016	17.481
2017	17.813
2018	18.154
2019	18.553
2020	18.928
2021	19.295
2022	19.641
2023	19.982
2024	20.325