{
    "name": "Global Price of Copper",
    "interval": "monthly",
    "unit": "dollar per metric ton",
    "data": [
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            "date": "2026-03-01",
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            "date": "2025-06-01",
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            "date": "2025-05-01",
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            "date": "2025-04-01",
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            "date": "2025-03-01",
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            "date": "2025-01-01",
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        {
            "date": "2024-12-01",
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        {
            "date": "2024-11-01",
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            "date": "2024-10-01",
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            "date": "2022-01-01",
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            "date": "2021-12-01",
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            "date": "2021-11-01",
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            "date": "2019-12-01",
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            "date": "2019-11-01",
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            "date": "2019-05-01",
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            "date": "2019-04-01",
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