Year	National currency per current international dollar
1980	0.559
1981	0.57
1982	0.586
1983	0.598
1984	0.638
1985	0.724
1986	0.785
1987	0.812
1988	0.966
1989	1
1990	1.065
1991	1.121
1992	1.217
1993	1.388
1994	1.561
1995	1.777
1996	1.885
1997	2.061
1998	2.189
1999	2.274
2000	2.446
2001	2.607
2002	2.795
2003	2.909
2004	2.943
2005	3.041
2006	3.071
2007	3.14
2008	3.402
2009	3.706
2010	3.78
2011	3.9
2012	4.135
2013	4.246
2014	4.41
2015	4.693
2016	4.924
2017	4.993
2018	5.13
2019	5.342
2020	5.529
2021	5.726
2022	5.932
2023	6.142
2024	6.358