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(Loss) earnings per share | 12 Months Ended
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Dec. 31, 2022
Weighted average ordinary shares used in calculating basic and diluted earnings per share [abstract] |
(Loss) earnings per share | 31. (Loss) earnings per share The weighted average number of common shares for the purposes of diluted (loss) earnings per share reconciles to the weighted average number of common shares used in the calculation of basic (loss) earnings per share as follows:
| December 31, 2022 |  | December 31, 2021
Weighted average number of common shares used in the calculation of basic (loss) earnings per share | 183,445,861 |  |  | 180,296,588 |
Dilutive impact of share options | — |  |  | 1,008,339 |
Dilutive impact of restricted share units and restricted share units with performance criteria | — |  |  | 246,560 |
Dilutive impact of performance share units | — |  |  | 213,420 |
Weighted average number of common shares used in the calculation of diluted (loss) earnings per share | 183,445,861 |  |  | 181,764,907 |
As at December 31, 2022, 2,765,436 options (2021 – 2,295,857) were excluded from the dilutive weighted-average number of common shares calculation because their effect would have been anti-dilutive. For the year ended December 31, 2022, 533,971 share options (2021 – 1,008,339), 264,835 RSU's and RSU's with performance criteria (2021 – 246,560), and 35,232 PSU's (2021 – 213,420) were anti-dilutive.

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