Year	National currency per current international dollar
1980	181.278
1981	189.888
1982	204.425
1983	221.093
1984	213.113
1985	271.458
1986	252.258
1987	230.994
1988	230.212
1989	222.804
1990	220.568
1991	207.262
1992	196.55
1993	185.972
1994	213.33
1995	236.984
1996	232.818
1997	232.835
1998	237.761
1999	237.991
2000	232.87
2001	237.66
2002	238.107
2003	241.137
2004	235.486
2005	236.781
2006	237.489
2007	235.527
2008	247.384
2009	254.062
2010	256.181
2011	255.862
2012	257.809
2013	271.092
2014	295.507
2015	310.397
2016	326.474
2017	331.829
2018	334.123
2019	337.89
2020	339.327
2021	340.854
2022	342.456
2023	343.949
2024	345.756