Year	National currency (Units)
1980	4224.363
1981	4266.657
1982	4198.684
1983	3970.115
1984	4026.819
1985	4094.695
1986	4114.145
1987	3772.514
1988	4062.221
1989	3975.603
1990	4000.589
1991	4110.101
1992	4164.538
1993	4157.350
1994	4246.826
1995	4260.849
1996	4260.947
1997	4375.563
1998	4451.166
1999	4178.725
2000	4162.251
2001	4241.440
2002	4355.623
2003	4405.209
2004	4625.519
2005	4815.037
2006	4936.528
2007	4941.838
2008	5172.424
2009	5134.631
2010	5244.107
2011	5594.158
2012	5820.631
2013	6139.979
2014	6298.553
2015	6208.713
2016	6072.781
2017	6340.127
2018	6313.598
2019	6234.470
2020	5579.679
2021	6042.602
2022	6327.489
2023	6382.345
2024	6298.983
2025	6264.336
2026	6300.450
2027	6349.392
2028	6415.493
2029	6485.380