Year	National currency per current international dollar
1980	0.644
1981	0.58
1982	0.539
1983	0.469
1984	0.462
1985	0.502
1986	0.35
1987	0.34
1988	0.282
1989	0.266
1990	0.253
1991	0.261
1992	0.269
1993	0.301
1994	0.341
1995	0.355
1996	0.358
1997	0.379
1998	0.37
1999	0.275
2000	0.247
2001	0.31
2002	0.342
2003	0.371
2004	0.377
2005	0.394
2006	0.413
2007	0.429
2008	0.479
2009	0.479
2010	0.508
2011	0.526
2012	0.542
2013	0.549
2014	0.555
2015	0.536
2016	0.54
2017	0.54
2018	0.539
2019	0.526
2020	0.521
2021	0.518
2022	0.513
2023	0.508
2024	0.501