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Basis of preparation of the interim financial statements (Tables) | 6 Months Ended
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Jun. 30, 2021
Basis of preparation of the interim financial statements |
Schedule of exchange rates used to translate its foreign operations | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | Average rate
​ | ​ | Closing rate | ​ | Three-month period ended | ​ | Six-month period ended
​ | ​ | June 30, 2021 | ​ | December 31, 2020 | ​ | June 30, 2021 | ​ | June 30, 2020 | ​ | June 30, 2021 | ​ | June 30, 2020
United States dollar | ​ | 5.0022 | ​ | 5.1967 | ​ | 5.2907 | ​ | 5.3854 | ​ | 5.3862 | ​ | 4.9218
Canadian dollar ("CAD") | ​ | 4.0334 | ​ | 4.0771 | ​ | 4.3096 | ​ | 3.8882 | ​ | 4.3209 | ​ | 3.5992
Euro ("EUR") | ​ | 5.9276 | ​ | 6.3779 | ​ | 6.3789 | ​ | 5.9279 | ​ | 6.4902 | ​ | 5.4211

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