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Shareholders' contributions (Tables) | 12 Months Ended
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Dec. 31, 2021
Statement of changes in equity [abstract] |
Schedule of Share Capital |
| Number of shares |  | Share capital and share premium
At January 1, 2019 | 122,382 |  |  | 1,084,076 |
Restricted shares and units vested (Note 23) | — |  |  | 4,455 |
Purchase of own shares | — |  |  | (3,219) |
At December 31,2019 | 122,382 |  |  | 1,085,312 |
Restricted shares and units vested (Note 23) | — |  |  | 4,182 |
Purchase of own shares | — |  |  | (3,106) |
At December 31,2020 | 122,382 |  |  | 1,086,388 |
Restricted shares units vested (Note 23) | — |  |  | 3,594 |
Purchase of own shares | — |  |  | (55,349) |
At December 31,2021 | 122,382 |  |  | 1,034,633 |
(1)Treasury shares were used to settle these options and units.

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