Year	National currency (Units)
1980	19634627.143
1981	20811930.356
1982	19924356.299
1983	18756405.923
1984	18723945.394
1985	18883384.125
1986	18350738.576
1987	18510755.461
1988	18996636.702
1989	19483472.680
1990	20286191.754
1991	19715390.856
1992	19648851.304
1993	20206413.441
1994	20855354.392
1995	21832710.147
1996	21732783.891
1997	22201704.733
1998	21772474.069
1999	21045543.823
2000	20147349.949
2001	19606356.320
2002	19246156.845
2003	19722193.051
2004	20167035.353
2005	20248423.487
2006	20869541.030
2007	21642554.907
2008	22679869.193
2009	22265033.647
2010	24351999.463
2011	25007094.305
2012	24454320.956
2013	26086712.964
2014	27064410.681
2015	27458374.959
2016	28217718.158
2017	29153480.171
2018	29663863.842
2019	29132760.738
2020	28495666.972
2021	29235684.474
2022	28891649.432
2023	29781181.239
2024	30503374.186
2025	31246033.234
2026	31914268.516
2027	32596794.840
2028	33293917.838
2029	34005949.679