Year	National currency per current international dollar (Units)
1980	1.257
1981	1.160
1982	1.120
1983	1.128
1984	1.155
1985	1.100
1986	0.985
1987	1.015
1988	1.016
1989	1.021
1990	1.022
1991	1.039
1992	1.040
1993	1.057
1994	1.075
1995	1.092
1996	1.111
1997	1.131
1998	1.213
1999	1.197
2000	1.276
2001	1.228
2002	1.247
2003	1.263
2004	1.304
2005	1.329
2006	1.340
2007	1.368
2008	1.482
2009	1.385
2010	1.420
2011	1.466
2012	1.454
2013	1.472
2014	1.505
2015	1.568
2016	1.594
2017	1.655
2018	1.628
2019	1.602
2020	1.568
2021	1.585
2022	1.576
2023	1.552
2024	1.581
2025	1.600
2026	1.600
2027	1.595
2028	1.591
2029	1.588