Year	National currency (Units)
1980	47793.316
1981	36532.907
1982	35416.794
1983	32387.243
1984	28466.615
1985	28798.584
1986	24573.583
1987	20100.833
1988	19166.975
1989	19653.543
1990	21636.306
1991	25012.924
1992	23340.689
1993	21580.461
1994	21844.070
1995	18084.373
1996	18060.335
1997	17298.568
1998	16872.901
1999	16576.324
2000	16946.689
2001	17127.247
2002	16241.925
2003	18585.731
2004	19350.689
2005	21099.251
2006	20786.151
2007	21737.318
2008	21332.976
2009	20120.554
2010	20848.412
2011	10559.538
2012	18597.375
2013	15292.627
2014	11781.944
2015	11567.107
2016	11281.942
2017	14799.798
2018	15817.092
2019	13907.325
2020	9713.727
2021	12342.783
2022	11212.256
2023	12228.794
2024	13056.083
2025	13824.788
2026	14259.399
2027	14401.643
2028	14565.296
2029	14752.218