Year	National currency per current international dollar
1980	9.143
1981	9.052
1982	8.956
1983	8.933
1984	8.747
1985	8.663
1986	8.633
1987	8.822
1988	9.026
1989	9.216
1990	9.391
1991	9.564
1992	9.728
1993	9.721
1994	9.962
1995	10.318
1996	10.547
1997	10.827
1998	11.57
1999	11.111
2000	11.013
2001	10.983
2002	10.995
2003	11.026
2004	11.12
2005	11.334
2006	11.562
2007	11.538
2008	11.899
2009	11.832
2010	12.173
2011	12.37
2012	12.369
2013	12.372
2014	12.318
2015	12.275
2016	12.442
2017	12.461
2018	12.358
2019	12.347
2020	12.246
2021	12.162
2022	12.112
2023	12.095
2024	12.009