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Tax situation - Income tax expense (benefit) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Income tax |  |  |
Deferred | $ (15,592) | $ (44,046) | $ 15,506
Supplementary retirement fund |  |  |
Income tax expense reported in the statements of comprehensive income | 41 | (23,671) | 25,430
Sociedad Minera Cerro Verde S.A.A. |  |  |
Income tax |  |  |
Current | 350,483 | 550,731 | 175,870
Deferred | 62,718 | 30,864 | 25,962
income tax expense (benefit) | 413,201 | 581,595 | 201,832
Mining taxes |  |  |
Current mining royalty and special mining tax | 88,224 | 144,895 | 32,203
Supplementary retirement fund |  |  |
Current | 6,371 | 8,828 | 2,568
Deferred | 751 | 385 | 323
Total Supplementary retirement fund | 7,122 | 9,213 | 2,891
Income tax expense reported in the statements of comprehensive income | $ 508,547 | $ 735,703 | $ 236,926

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