Year	National currency per current international dollar (Units)
1980	166.463
1981	165.504
1982	175.269
1983	190.209
1984	208.473
1985	224.599
1986	220.521
1987	210.054
1988	204.641
1989	193.234
1990	189.441
1991	189.694
1992	183.000
1993	182.282
1994	204.130
1995	218.892
1996	220.929
1997	224.844
1998	230.804
1999	232.757
2000	232.137
2001	234.812
2002	236.794
2003	237.780
2004	232.938
2005	231.206
2006	230.080
2007	225.602
2008	232.251
2009	239.052
2010	237.724
2011	238.707
2012	242.194
2013	241.083
2014	239.119
2015	240.708
2016	237.444
2017	232.801
2018	231.757
2019	230.716
2020	228.854
2021	226.141
2022	224.563
2023	223.361
2024	225.324
2025	229.754
2026	231.978
2027	233.411
2028	232.974
2029	232.829