{"updated": "2026-09-19", "item": "自動車タイヤ", "unit": "1本", "item_code": "7311", "source": "総務省統計局 小売物価統計調査（動向編）", "source_url": "https://www.stat.go.jp/data/kouri/", "license": "CC BY 4.0（数値）", "method": "81市の調査価格の月ごとの中央値。40市以上で値がある月だけ", "comparable": true, "ratio": 1.126, "from": {"month": "2020-01", "yen": 18460}, "to": {"month": "2026-07", "yen": 20795}, "months": [{"month": "2020-01", "yen": 18460}, {"month": "2020-02", "yen": 18234}, {"month": "2020-03", "yen": 18278}, {"month": "2020-04", "yen": 18308}, {"month": "2020-05", "yen": 18260}, {"month": "2020-06", "yen": 18381}, {"month": "2020-07", "yen": 18425}, {"month": "2020-08", "yen": 18535}, {"month": "2020-09", "yen": 18205}, {"month": "2020-10", "yen": 18480}, {"month": "2020-11", "yen": 18480}, {"month": "2020-12", "yen": 18546}, {"month": "2021-01", "yen": 18516}, {"month": "2021-02", "yen": 18755}, {"month": "2021-03", "yen": 18552}, {"month": "2021-04", "yen": 18755}, {"month": "2021-05", "yen": 18810}, {"month": "2021-06", "yen": 18552}, {"month": "2021-07", "yen": 18810}, {"month": "2021-08", "yen": 18788}, {"month": "2021-09", "yen": 18788}, {"month": "2021-10", "yen": 18473}, {"month": "2021-11", "yen": 18480}, {"month": "2021-12", "yen": 18659}, {"month": "2022-01", "yen": 18659}, {"month": "2022-02", "yen": 18590}, {"month": "2022-03", "yen": 18340}, {"month": "2022-04", "yen": 18575}, {"month": "2022-05", "yen": 19260}, {"month": "2022-06", "yen": 19470}, {"month": "2022-07", "yen": 19470}, {"month": "2022-08", "yen": 19470}, {"month": "2022-09", "yen": 19580}, {"month": "2022-10", "yen": 19641}, {"month": "2022-11", "yen": 19910}, {"month": "2022-12", "yen": 19910}, {"month": "2023-01", "yen": 19920}, {"month": "2023-02", "yen": 19920}, {"month": "2023-03", "yen": 19750}, {"month": "2023-04", "yen": 19920}, {"month": "2023-05", "yen": 20635}, {"month": "2023-06", "yen": 20350}, {"month": "2023-07", "yen": 20625}, {"month": "2023-08", "yen": 20705}, {"month": "2023-09", "yen": 20660}, {"month": "2023-10", "yen": 20735}, {"month": "2023-11", "yen": 20755}, {"month": "2023-12", "yen": 20755}, {"month": "2024-01", "yen": 20705}, {"month": "2024-02", "yen": 20705}, {"month": "2024-03", "yen": 20585}, {"month": "2024-04", "yen": 20000}, {"month": "2024-05", "yen": 20076}, {"month": "2024-06", "yen": 20076}, {"month": "2024-07", "yen": 20076}, {"month": "2024-08", "yen": 20040}, {"month": "2024-09", "yen": 20076}, {"month": "2024-10", "yen": 20076}, {"month": "2024-11", "yen": 20260}, {"month": "2024-12", "yen": 20405}, {"month": "2025-01", "yen": 20405}, {"month": "2025-02", "yen": 20260}, {"month": "2025-03", "yen": 20405}, {"month": "2025-04", "yen": 20405}, {"month": "2025-05", "yen": 20405}, {"month": "2025-06", "yen": 20452}, {"month": "2025-07", "yen": 20808}, {"month": "2025-08", "yen": 20360}, {"month": "2025-09", "yen": 20905}, {"month": "2025-10", "yen": 20905}, {"month": "2025-11", "yen": 20605}, {"month": "2025-12", "yen": 20900}, {"month": "2026-01", "yen": 20900}, {"month": "2026-02", "yen": 20900}, {"month": "2026-03", "yen": 20635}, {"month": "2026-04", "yen": 20810}, {"month": "2026-05", "yen": 20750}, {"month": "2026-06", "yen": 20750}, {"month": "2026-07", "yen": 20795}]}