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Consolidated Statements of Earnings (Loss) - CAD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Profit or loss [abstract] |  |  |
Product sales | $ 32,854 | $ 17,491 | $ 24,394
Less: royalties | (2,797) | (598) | (1,523)
Revenue | 30,057 | 16,893 | 22,871
Expenses |  |  |
Production | 7,152 | 6,280 | 6,277
Transportation, blending and feedstock | 6,604 | 4,498 | 4,699
Depletion, depreciation and amortization | 5,724 | 6,046 | 5,546
Administration | 366 | 391 | 344
Share-based compensation | 514 | (82) | 223
Asset retirement obligation accretion | 185 | 205 | 190
Interest and other financing expense | 711 | 756 | 836
Risk management activities | 36 | (7) | 77
Foreign exchange gain | (127) | (275) | (570)
Gain on acquisitions | (478) | (217) | 0
Income from North West Redwater Partnership | (400) | 0 | 0
(Gain) loss from investments | (141) | 171 | 293
Total expenses | 20,146 | 17,766 | 17,915
Earnings (loss) before taxes | 9,911 | (873) | 4,956
Current income tax expense (recovery) | 1,848 | (257) | 434
Deferred income tax expense (recovery) | 399 | (181) | (894)
Net earnings (loss) | $ 7,664 | $ (435) | $ 5,416
Net earnings (loss) per common share |  |  |
Basic earnings per share (in CAD per share) | $ 6.49 | $ (0.37) | $ 4.55
Diluted earnings per share (in CAD per share) | $ 6.46 | $ (0.37) | $ 4.54

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- Definition The amount of expense arising from royalties. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 85 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_85&doctype=Standard -URIDate 2021-03-24 + Details
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