Year	National currency (Units)
1980	20094.814
1981	19815.017
1982	19881.231
1983	20099.825
1984	20747.433
1985	21319.205
1986	21925.243
1987	22626.444
1988	23569.276
1989	24350.811
1990	24830.830
1991	25165.040
1992	25362.108
1993	25124.438
1994	25655.324
1995	26395.050
1996	26710.994
1997	27184.508
1998	27663.091
1999	28110.421
2000	29167.520
2001	29717.300
2002	29775.726
2003	29716.290
2004	29916.655
2005	29936.634
2006	30344.801
2007	30679.316
2008	30131.283
2009	28338.896
2010	28694.169
2011	28772.665
2012	27842.174
2013	27251.515
2014	27219.273
2015	27454.040
2016	27870.056
2017	28380.634
2018	28704.989
2019	28902.092
2020	26385.643
2021	28773.885
2022	30025.292
2023	30394.107
2024	30626.079
2025	30890.450
2026	30997.872
2027	31161.724
2028	31468.796
2029	31808.624