Year	National currency (Units)
1980	21994.857
1981	21915.052
1982	22065.096
1983	22126.208
1984	22683.416
1985	23047.110
1986	23464.409
1987	23991.403
1988	25096.671
1989	25831.574
1990	26587.995
1991	26969.118
1992	27286.236
1993	26899.447
1994	27678.656
1995	28254.964
1996	28593.085
1997	29598.457
1998	30113.820
1999	31115.108
2000	32191.744
2001	32468.631
2002	32874.495
2003	33067.802
2004	34115.009
2005	34742.020
2006	35406.381
2007	36454.604
2008	36335.040
2009	35315.277
2010	36035.925
2011	36111.087
2012	36130.824
2013	36094.446
2014	36523.642
2015	37082.036
2016	37306.660
2017	37775.221
2018	38294.389
2019	38957.990
2020	36694.138
2021	39098.322
2022	40057.248
2023	40209.163
2024	40485.841
2025	40839.820
2026	41229.890
2027	41590.945
2028	42010.457
2029	42401.942