Year	National currency per current international dollar
1980	0.499
1981	0.485
1982	0.46
1983	0.442
1984	0.427
1985	0.415
1986	0.427
1987	0.433
1988	0.426
1989	0.422
1990	0.425
1991	0.429
1992	0.426
1993	0.429
1994	0.439
1995	0.444
1996	0.436
1997	0.443
1998	0.452
1999	0.46
2000	0.527
2001	0.528
2002	0.534
2003	0.54
2004	0.533
2005	0.529
2006	0.527
2007	0.528
2008	0.533
2009	0.543
2010	0.558
2011	0.558
2012	0.559
2013	0.561
2014	0.564
2015	0.572
2016	0.574
2017	0.577
2018	0.576
2019	0.579
2020	0.58
2021	0.58
2022	0.581
2023	0.582
2024	0.582