Year	National currency (Units)
1980	2970.378
1981	3088.186
1982	3029.087
1983	3106.350
1984	3374.383
1985	3256.399
1986	3447.691
1987	3928.986
1988	4551.425
1989	5114.518
1990	5639.938
1991	5963.628
1992	6748.836
1993	7085.581
1994	7111.454
1995	7355.805
1996	7459.644
1997	7350.535
1998	7476.502
1999	7816.496
2000	8667.860
2001	8819.319
2002	9128.998
2003	9409.431
2004	9815.434
2005	10061.368
2006	10885.405
2007	11373.894
2008	11289.901
2009	10673.243
2010	10786.504
2011	10954.047
2012	11147.778
2013	11562.116
2014	11842.736
2015	11917.987
2016	11856.263
2017	11687.740
2018	11583.186
2019	11686.258
2020	9717.219
2021	11272.320
2022	12815.541
2023	13730.094
2024	14340.365
2025	14739.608
2026	15002.341
2027	15269.757
2028	15541.941
2029	15818.975
