Year	National currency per current international dollar
1980	5.097
1981	4.872
1982	4.872
1983	5.032
1984	5.257
1985	5.504
1986	5.76
1987	5.82
1988	6.009
1989	6.338
1990	6.502
1991	6.742
1992	7.202
1993	7.648
1994	8.397
1995	9.072
1996	9.649
1997	10.493
1998	11.539
1999	12.363
2000	12.603
2001	12.774
2002	13.216
2003	13.48
2004	13.578
2005	13.812
2006	14.159
2007	14.378
2008	14.722
2009	15.38
2010	16.035
2011	16.856
2012	18.003
2013	18.996
2014	19.885
2015	20.729
2016	21.319
2017	22.17
2018	22.635
2019	23.179
2020	23.524
2021	23.815
2022	24.336
2023	24.867
2024	25.405