Year	National currency per current international dollar
1980	4.66
1981	4.697
1982	4.894
1983	5.225
1984	5.577
1985	5.893
1986	6.333
1987	6.493
1988	6.613
1989	7.002
1990	7.486
1991	8.116
1992	9.241
1993	11.317
1994	12.504
1995	13.66
1996	16.246
1997	17.787
1998	18.728
1999	19.192
2000	19.957
2001	19.918
2002	19.866
2003	20.784
2004	21.689
2005	22.085
2006	23.765
2007	25.024
2008	28.266
2009	31.317
2010	31.604
2011	34.298
2012	36.809
2013	38.044
2014	40.35
2015	43.926
2016	46.985
2017	50.104
2018	50.963
2019	53.096
2020	54.791
2021	56.396
2022	58.035
2023	59.73
2024	61.468