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Weighted Average Shares Outstanding (Tables)
12 Months Ended
Dec. 31, 2020
Investments accounted for using equity method [abstract]  
Number of Basic Shares Outstanding and Diluted Common Shares, Calculated on a Weighted Average Basis
The number of basic shares outstanding and diluted common shares, calculated on a weighted average basis, is as follows:
December 31,
2020
December 31,
2019
##
Basic shares outstanding111,553,711 111,550,424 
Share options (dilutive effect in 2020 of 2,123,800 options; 2019 – 107,168 options)
395,594 — 
Diluted shares111,949,305 111,550,424