Year	National currency (Units)
1980	4316.430
1981	4036.299
1982	3972.767
1983	3756.192
1984	3872.931
1985	4093.269
1986	4314.633
1987	4384.835
1988	4316.211
1989	4376.453
1990	4163.861
1991	4193.885
1992	4106.743
1993	4230.238
1994	4386.251
1995	4509.527
1996	4477.712
1997	4558.198
1998	4503.420
1999	4474.741
2000	4629.446
2001	4628.714
2002	4708.847
2003	4704.356
2004	4916.635
2005	5015.758
2006	5156.747
2007	5412.580
2008	5629.589
2009	5557.875
2010	5908.376
2011	6110.871
2012	6196.033
2013	6347.200
2014	6343.853
2015	6084.142
2016	5854.029
2017	5901.769
2018	5976.131
2019	6019.450
2020	5795.225
2021	6039.908
2022	6190.182
2023	6333.320
2024	6434.153
2025	6536.518
2026	6637.950
2027	6735.299
2028	6834.306
2029	6934.603