{"metadata": {"title": "Etain nom", "source_title": "", "slug": "marches-mm-etain-nom", "unit": "USD/t", "frequency": "Annuelle", "source": "BM", "source_url": "", "coverage": "1960-2023", "last_update": "26/09/2026", "extracted_at": "29/09/2026 22:31", "license": "Réutilisation autorisée avec mention de la source : DRC-Data et producteur d'origine", "url": "https://drc-data.org/data_show/124/", "points": 64}, "observations": [{"period": "1960", "value": 2196.73, "status": "final"}, {"period": "1961", "value": 2449.89, "status": "final"}, {"period": "1962", "value": 2471.38, "status": "final"}, {"period": "1963", "value": 2507.73, "status": "final"}, {"period": "1964", "value": 3412.74, "status": "final"}, {"period": "1965", "value": 3890.78, "status": "final"}, {"period": "1966", "value": 3573.51, "status": "final"}, {"period": "1967", "value": 3308.03, "status": "final"}, {"period": "1968", "value": 3126.88, "status": "final"}, {"period": "1969", "value": 3427.45, "status": "final"}, {"period": "1970", "value": 3673.45, "status": "final"}, {"period": "1971", "value": 3511.97, "status": "final"}, {"period": "1972", "value": 3739.96, "status": "final"}, {"period": "1973", "value": 4802.2, "status": "final"}, {"period": "1974", "value": 8184.27, "status": "final"}, {"period": "1975", "value": 6876.58, "status": "final"}, {"period": "1976", "value": 7585.54, "status": "final"}, {"period": "1977", "value": 10804.45, "status": "final"}, {"period": "1978", "value": 12875.21, "status": "final"}, {"period": "1979", "value": 15447.41, "status": "final"}, {"period": "1980", "value": 16774.88, "status": "final"}, {"period": "1981", "value": 14159.13, "status": "final"}, {"period": "1982", "value": 12825.8, "status": "final"}, {"period": "1983", "value": 12987.97, "status": "final"}, {"period": "1984", "value": 12233.49, "status": "final"}, {"period": "1985", "value": 11539.04, "status": "final"}, {"period": "1986", "value": 6161.37, "status": "final"}, {"period": "1987", 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