Year	National currency (Units)
1980	11293760.497
1981	11332328.142
1982	7130729.423
1983	8696964.178
1984	12489175.514
1985	15442456.240
1986	14348449.263
1987	16704333.528
1988	11917517.184
1989	6783374.421
1990	5712475.639
1991	7573991.952
1992	7517098.571
1993	7622057.681
1994	7853688.897
1995	8067266.607
1996	8201769.180
1997	8919534.007
1998	9179354.025
1999	8974113.089
2000	8848504.039
2001	8852147.171
2002	8734649.178
2003	8465794.208
2004	8740237.003
2005	8559064.826
2006	8580264.551
2007	9364327.791
2008	10219014.869
2009	11151820.082
2010	11700636.212
2011	11237361.165
2012	10827033.997
2013	10527791.570
2014	10189671.183
2015	9810979.596
2016	9694113.189
2017	9630944.077
2018	9394250.932
2019	8749350.359
2020	6511373.183
2021	5947854.948
2022	6029875.073