Year	National currency (Units)
1980	14175.737
1981	13433.610
1982	14350.989
1983	13940.229
1984	14207.978
1985	14755.787
1986	15611.659
1987	14862.104
1988	16043.279
1989	16049.833
1990	16633.509
1991	17549.647
1992	16726.360
1993	16264.355
1994	17822.011
1995	16448.681
1996	18399.686
1997	17777.745
1998	18931.902
1999	18772.222
2000	18812.926
2001	19963.336
2002	20352.002
2003	21353.149
2004	22087.407
2005	22452.424
2006	23885.643
2007	24221.692
2008	25335.192
2009	26082.143
2010	26744.174
2011	27804.138
2012	28294.499
2013	29223.321
2014	29655.138
2015	30621.626
2016	30458.115
2017	31663.549
2018	32293.242
2019	32884.171
2020	30213.785
2021	32312.781
2022	32401.811
2023	33061.043
2024	33783.213
2025	34582.318
2026	35434.438
2027	36321.636
2028	37233.746
2029	38190.110