Year	National currency (Units)
1980	13903.781
1981	13522.859
1982	13291.850
1983	13063.814
1984	13257.187
1985	13525.430
1986	13554.603
1987	13200.651
1988	13724.699
1989	14186.273
1990	14098.313
1991	14320.814
1992	14289.242
1993	13974.738
1994	14174.159
1995	14408.465
1996	14747.564
1997	15349.534
1998	15851.963
1999	16256.147
2000	16849.683
2001	17448.107
2002	18045.496
2003	19043.063
2004	19961.850
2005	20027.362
2006	21092.475
2007	21721.224
2008	21599.635
2009	20607.702
2010	19435.856
2011	17456.806
2012	16273.804
2013	15983.720
2014	16172.648
2015	16243.195
2016	16275.380
2017	16476.906
2018	16793.960
2019	17136.035
2020	15548.313
2021	16914.264
2022	18227.808
2023	18614.937
2024	19003.743
2025	19380.670
2026	19740.929
2027	20032.711
2028	20326.575
2029	20612.333