Year	National currency (Units)
1980	8549455.923
1981	8553604.535
1982	8449309.031
1983	8400894.412
1984	8501975.554
1985	8825879.694
1986	9150069.434
1987	9443525.538
1988	9625737.626
1989	9752064.826
1990	9966685.363
1991	9995410.470
1992	10226027.964
1993	10607514.328
1994	10955523.544
1995	11332706.414
1996	11380416.532
1997	11618326.761
1998	11505681.351
1999	10883164.874
2000	11035806.288
2001	11078566.250
2002	11214471.972
2003	11509074.877
2004	11974348.576
2005	12354950.742
2006	13029033.871
2007	13747675.441
2008	14042582.679
2009	14048045.077
2010	14520409.201
2011	15366431.162
2012	15808670.324
2013	16461779.570
2014	17040701.818
2015	17374719.787
2016	17541895.476
2017	17559469.582
2018	17696553.067
2019	17840123.583
2020	16237038.742
2021	17752221.579
2022	18839525.472
2023	18756159.137
2024	18777331.234
2025	19051275.878
2026	19434438.127
2027	19825306.596
2028	20224036.272
2029	20630785.262
