{
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      "year": 1890,
      "month": 6,
      "company_name": "北海道炭礦鉄道",
      "consolidation": "単体",
      "accounting_standard": "旧商法",
      "unit": "万円",
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      "operating_profit_jp": null,
      "operating_profit": null,
      "ordinary_profit_jp": null,
      "ordinary_profit": null,
      "net_profit_jp": "当期純利益",
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      "net_margin": 59.09,
      "employees": null,
      "reference": "七十年史 第三部第一編第二章 経理 第三節 収支（明治23年上期・利益率12.1%・年1割配当）"
    },
    {
      "year": 1902,
      "month": 12,
      "company_name": "北海道炭礦鉄道",
      "consolidation": "単体",
      "accounting_standard": "旧商法",
      "unit": "万円",
      "sales_jp": null,
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      "operating_profit": null,
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      "ordinary_profit": null,
      "net_profit_jp": "当期純利益",
      "net_profit": 100,
      "net_margin": null,
      "employees": null,
      "reference": "七十年史 経理 第三節 収支（明治35年下期に純益100万円を突破）"
    },
    {
      "year": 1907,
      "month": 12,
      "company_name": "北海道炭礦汽船",
      "consolidation": "単体",
      "accounting_standard": "旧商法",
      "unit": "万円",
      "sales_jp": null,
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      "operating_profit_jp": null,
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      "ordinary_profit_jp": null,
      "ordinary_profit": null,
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      "net_profit": 200,
      "net_margin": null,
      "employees": null,
      "reference": "七十年史 経理 第三節 収支（明治40年下期に純益200万円超）"
    },
    {
      "year": 1910,
      "month": 6,
      "company_name": "北海道炭礦汽船",
      "consolidation": "単体",
      "accounting_standard": "旧商法",
      "unit": "万円",
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      "net_profit": -70,
      "net_margin": null,
      "employees": null,
      "reference": "七十年史 経理 第三節 収支（明治43年上期に70万円の欠損・創業以来の連続配当が途切れ無配へ）"
    },
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      "year": 1918,
      "month": 6,
      "company_name": "北海道炭礦汽船",
      "consolidation": "単体",
      "accounting_standard": "旧商法",
      "unit": "万円",
      "sales_jp": null,
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      "operating_profit_jp": null,
      "operating_profit": null,
      "ordinary_profit_jp": null,
      "ordinary_profit": null,
      "net_profit_jp": "当期純利益",
      "net_profit": 280,
      "net_margin": null,
      "employees": null,
      "reference": "七十年史 経理 第三節 収支（大正7年上期）"
    },
    {
      "year": 1919,
      "month": 12,
      "company_name": "北海道炭礦汽船",
      "consolidation": "単体",
      "accounting_standard": "旧商法",
      "unit": "万円",
      "sales_jp": null,
      "sales": null,
      "operating_profit_jp": null,
      "operating_profit": null,
      "ordinary_profit_jp": null,
      "ordinary_profit": null,
      "net_profit_jp": "当期純利益",
      "net_profit": 500,
      "net_margin": null,
      "employees": null,
      "reference": "七十年史 経理 第三節 収支（大正8年・500万円を突破）"
    },
    {
      "year": 1933,
      "month": 6,
      "company_name": "北海道炭礦汽船",
      "consolidation": "単体",
      "accounting_standard": "旧商法",
      "unit": "万円",
      "sales_jp": null,
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      "operating_profit_jp": null,
      "operating_profit": null,
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      "ordinary_profit": null,
      "net_profit_jp": "当期純利益",
      "net_profit": 132,
      "net_margin": null,
      "employees": null,
      "reference": "七十年史 経理 第三節 収支（昭和8年上期）"
    },
    {
      "year": 1937,
      "month": 12,
      "company_name": "北海道炭礦汽船",
      "consolidation": "単体",
      "accounting_standard": "旧商法",
      "unit": "万円",
      "sales_jp": null,
      "sales": null,
      "operating_profit_jp": null,
      "operating_profit": null,
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      "ordinary_profit": null,
      "net_profit_jp": "当期純利益",
      "net_profit": 450,
      "net_margin": null,
      "employees": null,
      "reference": "七十年史 経理 第三節 収支（昭和12年下期）"
    },
    {
      "year": 1940,
      "month": 12,
      "company_name": "北海道炭礦汽船",
      "consolidation": "単体",
      "accounting_standard": "旧商法",
      "unit": "万円",
      "sales_jp": null,
      "sales": null,
      "operating_profit_jp": null,
      "operating_profit": null,
      "ordinary_profit_jp": null,
      "ordinary_profit": null,
      "net_profit_jp": "当期純利益",
      "net_profit": 850,
      "net_margin": null,
      "employees": null,
      "reference": "七十年史 経理 第三節 収支（昭和15年下期・戦前の最高益）"
    },
    {
      "year": 1945,
      "month": 12,
      "company_name": "北海道炭礦汽船",
      "consolidation": "単体",
      "accounting_standard": "旧商法",
      "unit": "万円",
      "sales_jp": null,
      "sales": null,
      "operating_profit_jp": null,
      "operating_profit": null,
      "ordinary_profit_jp": null,
      "ordinary_profit": null,
      "net_profit_jp": "当期純損失",
      "net_profit": -4500,
      "net_margin": null,
      "employees": null,
      "reference": "七十年史 経理 第三節 収支（昭和20年下期・日本石炭買取価格がコスト以下に抑制）"
    },
    {
      "year": 1949,
      "month": 12,
      "company_name": "北海道炭礦汽船",
      "consolidation": "単体",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": null,
      "sales": null,
      "operating_profit_jp": null,
      "operating_profit": null,
      "ordinary_profit_jp": null,
      "ordinary_profit": null,
      "net_profit_jp": "当期純利益",
      "net_profit": 1.3,
      "net_margin": null,
      "employees": null,
      "reference": "七十年史 経理 第三節 収支（昭和24年下期・石炭統制撤廃と自売制再開）"
    },
    {
      "year": 1950,
      "month": 3,
      "company_name": "北海道炭礦汽船",
      "consolidation": "単体",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": null,
      "sales": null,
      "operating_profit_jp": null,
      "operating_profit": null,
      "ordinary_profit_jp": null,
      "ordinary_profit": null,
      "net_profit_jp": null,
      "net_profit": null,
      "net_margin": null,
      "employees": null,
      "reference": null
    },
    {
      "year": 1951,
      "month": 6,
      "company_name": "北海道炭礦汽船",
      "consolidation": "単体",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": null,
      "sales": null,
      "operating_profit_jp": null,
      "operating_profit": null,
      "ordinary_profit_jp": null,
      "ordinary_profit": null,
      "net_profit_jp": "当期純利益",
      "net_profit": 6,
      "net_margin": null,
      "employees": null,
      "reference": "七十年史 経理 第三節 収支（昭和26年上期・朝鮮動乱ブーム・2割5分配当）"
    },
    {
      "year": 1952,
      "month": 3,
      "company_name": "北海道炭礦汽船",
      "consolidation": "単体",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": null,
      "sales": null,
      "operating_profit_jp": null,
      "operating_profit": null,
      "ordinary_profit_jp": null,
      "ordinary_profit": null,
      "net_profit_jp": null,
      "net_profit": null,
      "net_margin": null,
      "employees": null,
      "reference": null
    },
    {
      "year": 1953,
      "month": 12,
      "company_name": "北海道炭礦汽船",
      "consolidation": "単体",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": null,
      "sales": null,
      "operating_profit_jp": null,
      "operating_profit": null,
      "ordinary_profit_jp": null,
      "ordinary_profit": null,
      "net_profit_jp": "当期純利益",
      "net_profit": 0.4,
      "net_margin": null,
      "employees": null,
      "reference": "七十年史 経理 第三節 収支（昭和28年下期・炭労長期スト後の炭価崩落で急低下）"
    },
    {
      "year": 1954,
      "month": 3,
      "company_name": "北海道炭礦汽船",
      "consolidation": "単体",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": null,
      "sales": null,
      "operating_profit_jp": null,
      "operating_profit": null,
      "ordinary_profit_jp": null,
      "ordinary_profit": null,
      "net_profit_jp": null,
      "net_profit": null,
      "net_margin": null,
      "employees": null,
      "reference": null
    },
    {
      "year": 1955,
      "month": 3,
      "company_name": "北海道炭礦汽船",
      "consolidation": "単体",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": null,
      "sales": null,
      "operating_profit_jp": null,
      "operating_profit": null,
      "ordinary_profit_jp": null,
      "ordinary_profit": null,
      "net_profit_jp": "当期純損失",
      "net_profit": -0.1,
      "net_margin": null,
      "employees": null,
      "reference": "七十年史 経理 第三節 収支（昭和29年下期・1"
    },
    {
      "year": 1956,
      "month": 6,
      "company_name": "北海道炭礦汽船",
      "consolidation": "単体",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": null,
      "sales": null,
      "operating_profit_jp": null,
      "operating_profit": null,
      "ordinary_profit_jp": null,
      "ordinary_profit": null,
      "net_profit_jp": "当期純利益",
      "net_profit": 1.8,
      "net_margin": null,
      "employees": null,
      "reference": "七十年史 経理 第三節 収支（昭和31年上期）"
    },
    {
      "year": 1956,
      "month": 12,
      "company_name": "北海道炭礦汽船",
      "consolidation": "単体",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": null,
      "sales": null,
      "operating_profit_jp": null,
      "operating_profit": null,
      "ordinary_profit_jp": null,
      "ordinary_profit": null,
      "net_profit_jp": "当期純利益",
      "net_profit": 3.6,
      "net_margin": null,
      "employees": null,
      "reference": "七十年史 経理 第三節 収支（昭和31年下期）"
    },
    {
      "year": 1957,
      "month": 6,
      "company_name": "北海道炭礦汽船",
      "consolidation": "単体",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": null,
      "sales": null,
      "operating_profit_jp": null,
      "operating_profit": null,
      "ordinary_profit_jp": null,
      "ordinary_profit": null,
      "net_profit_jp": "当期純利益",
      "net_profit": 5.7,
      "net_margin": null,
      "employees": null,
      "reference": "七十年史 経理 第三節 収支（昭和32年上期・戦後最高の販売量230万トン・借入金10億円を返済）"
    },
    {
      "year": 1957,
      "month": 12,
      "company_name": "北海道炭礦汽船",
      "consolidation": "単体",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": null,
      "sales": null,
      "operating_profit_jp": null,
      "operating_profit": null,
      "ordinary_profit_jp": null,
      "ordinary_profit": null,
      "net_profit_jp": "当期純利益",
      "net_profit": 3.6,
      "net_margin": null,
      "employees": null,
      "reference": "七十年史 経理 第三節 収支（昭和32年下期・1割2分配当据置。ガス・鉄鋼の長期販売契約が奏効）"
    },
    {
      "year": 1958,
      "month": 3,
      "company_name": "北海道炭礦汽船",
      "consolidation": "単体",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": null,
      "sales": null,
      "operating_profit_jp": null,
      "operating_profit": null,
      "ordinary_profit_jp": null,
      "ordinary_profit": null,
      "net_profit_jp": null,
      "net_profit": null,
      "net_margin": null,
      "employees": null,
      "reference": null
    },
    {
      "year": 1959,
      "month": 3,
      "company_name": "北海道炭礦汽船",
      "consolidation": "単体",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "売上高",
      "sales": 239.75,
      "operating_profit_jp": null,
      "operating_profit": null,
      "ordinary_profit_jp": null,
      "ordinary_profit": null,
      "net_profit_jp": "当期純利益",
      "net_profit": 5.02,
      "net_margin": 2.093,
      "employees": null,
      "reference": "会社年鑑（1963年版）半期合算"
    },
    {
      "year": 1960,
      "month": 3,
      "company_name": "北海道炭礦汽船",
      "consolidation": "単体",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "売上高",
      "sales": 273.14,
      "operating_profit_jp": null,
      "operating_profit": null,
      "ordinary_profit_jp": null,
      "ordinary_profit": null,
      "net_profit_jp": "当期純損失",
      "net_profit": -1.63,
      "net_margin": -0.597,
      "employees": null,
      "reference": "会社年鑑（1963年版）半期合算"
    },
    {
      "year": 1961,
      "month": 3,
      "company_name": "北海道炭礦汽船",
      "consolidation": "単体",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "売上高",
      "sales": 287.95,
      "operating_profit_jp": null,
      "operating_profit": null,
      "ordinary_profit_jp": null,
      "ordinary_profit": null,
      "net_profit_jp": "当期純利益",
      "net_profit": 7.66,
      "net_margin": 2.66,
      "employees": null,
      "reference": "会社年鑑（1963年版）半期合算"
    },
    {
      "year": 1962,
      "month": 3,
      "company_name": "北海道炭礦汽船",
      "consolidation": "単体",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "売上高",
      "sales": 303.77,
      "operating_profit_jp": null,
      "operating_profit": null,
      "ordinary_profit_jp": null,
      "ordinary_profit": null,
      "net_profit_jp": "当期純利益",
      "net_profit": 7.65,
      "net_margin": 2.518,
      "employees": null,
      "reference": "会社年鑑（1963年版）半期合算"
    },
    {
      "year": 1963,
      "month": 3,
      "company_name": "北海道炭礦汽船",
      "consolidation": "単体",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "売上高",
      "sales": 280.64,
      "operating_profit_jp": null,
      "operating_profit": null,
      "ordinary_profit_jp": null,
      "ordinary_profit": null,
      "net_profit_jp": "当期純損失",
      "net_profit": -10.72,
      "net_margin": -3.82,
      "employees": null,
      "reference": "会社年鑑（1967年版）半期合算"
    },
    {
      "year": 1964,
      "month": 3,
      "company_name": "北海道炭礦汽船",
      "consolidation": "単体",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "売上高",
      "sales": 302.59,
      "operating_profit_jp": null,
      "operating_profit": null,
      "ordinary_profit_jp": null,
      "ordinary_profit": null,
      "net_profit_jp": "当期純利益",
      "net_profit": 11.76,
      "net_margin": 3.886,
      "employees": null,
      "reference": "会社年鑑（1967年版）半期合算"
    },
    {
      "year": 1965,
      "month": 3,
      "company_name": "北海道炭礦汽船",
      "consolidation": "単体",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "売上高",
      "sales": 334.59,
      "operating_profit_jp": null,
      "operating_profit": null,
      "ordinary_profit_jp": null,
      "ordinary_profit": null,
      "net_profit_jp": "当期純損失",
      "net_profit": -1.43,
      "net_margin": -0.428,
      "employees": null,
      "reference": "会社年鑑（1967年版）半期合算"
    },
    {
      "year": 1966,
      "month": 3,
      "company_name": "北海道炭礦汽船",
      "consolidation": "単体",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "売上高",
      "sales": 342.17,
      "operating_profit_jp": null,
      "operating_profit": null,
      "ordinary_profit_jp": null,
      "ordinary_profit": null,
      "net_profit_jp": "当期純損失",
      "net_profit": -5.73,
      "net_margin": -1.675,
      "employees": null,
      "reference": "会社年鑑（1967年版）半期合算"
    },
    {
      "year": 1967,
      "month": 3,
      "company_name": "北海道炭礦汽船",
      "consolidation": "単体",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "売上高",
      "sales": 354.98,
      "operating_profit_jp": null,
      "operating_profit": null,
      "ordinary_profit_jp": null,
      "ordinary_profit": null,
      "net_profit_jp": "当期純損失",
      "net_profit": -11.15,
      "net_margin": -3.142,
      "employees": null,
      "reference": "会社年鑑（1971年版）半期合算"
    },
    {
      "year": 1968,
      "month": 3,
      "company_name": "北海道炭礦汽船",
      "consolidation": "単体",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "売上高",
      "sales": 371.2,
      "operating_profit_jp": null,
      "operating_profit": null,
      "ordinary_profit_jp": null,
      "ordinary_profit": null,
      "net_profit_jp": "当期純損失",
      "net_profit": -6.78,
      "net_margin": -1.827,
      "employees": null,
      "reference": "会社年鑑（1971年版）半期合算"
    },
    {
      "year": 1969,
      "month": 3,
      "company_name": "北海道炭礦汽船",
      "consolidation": "単体",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "売上高",
      "sales": 317.8,
      "operating_profit_jp": null,
      "operating_profit": null,
      "ordinary_profit_jp": null,
      "ordinary_profit": null,
      "net_profit_jp": "当期純損失",
      "net_profit": -21.01,
      "net_margin": -6.612,
      "employees": null,
      "reference": "会社年鑑（1971年版）半期合算"
    },
    {
      "year": 1970,
      "month": 3,
      "company_name": "北海道炭礦汽船",
      "consolidation": "単体",
      "accounting_standard": "JGAAP",
      "unit": "億円",
      "sales_jp": "売上高",
      "sales": 293.59,
      "operating_profit_jp": null,
      "operating_profit": null,
      "ordinary_profit_jp": null,
      "ordinary_profit": null,
      "net_profit_jp": "当期純損失",
      "net_profit": -10.54,
      "net_margin": -3.591,
      "employees": null,
      "reference": "会社年鑑（1971年版）半期合算"
    },
    {
      "year": 1971,
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    },
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    }
  ]
}
