{"updated": "2026-09-19", "item": "じゃがいも", "unit": "1kg", "item_code": "1412", "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": 1.686, "from": {"month": "2020-01", "yen": 318}, "to": {"month": "2026-07", "yen": 536}, "months": [{"month": "2020-01", "yen": 318}, {"month": "2020-02", "yen": 320}, {"month": "2020-03", "yen": 324}, {"month": "2020-04", "yen": 374}, {"month": "2020-05", "yen": 393}, {"month": "2020-06", "yen": 477}, {"month": "2020-07", "yen": 576}, {"month": "2020-08", "yen": 582}, {"month": "2020-09", "yen": 370}, {"month": "2020-10", "yen": 343}, {"month": "2020-11", "yen": 342}, {"month": "2020-12", "yen": 347}, {"month": "2021-01", "yen": 363}, {"month": "2021-02", "yen": 422}, {"month": "2021-03", "yen": 449}, {"month": "2021-04", "yen": 529}, {"month": "2021-05", "yen": 546}, {"month": "2021-06", "yen": 517}, {"month": "2021-07", "yen": 405}, {"month": "2021-08", "yen": 378}, {"month": "2021-09", "yen": 416}, {"month": "2021-10", "yen": 411}, {"month": "2021-11", "yen": 411}, {"month": "2021-12", "yen": 431}, {"month": "2022-01", "yen": 445}, {"month": "2022-02", "yen": 467}, {"month": "2022-03", "yen": 483}, {"month": "2022-04", "yen": 507}, {"month": "2022-05", "yen": 523}, {"month": "2022-06", "yen": 411}, {"month": "2022-07", "yen": 378}, {"month": "2022-08", "yen": 365}, {"month": "2022-09", "yen": 384}, {"month": "2022-10", "yen": 363}, {"month": "2022-11", "yen": 360}, {"month": "2022-12", "yen": 357}, {"month": "2023-01", "yen": 356}, {"month": "2023-02", "yen": 364}, {"month": "2023-03", "yen": 371}, {"month": "2023-04", "yen": 435}, {"month": "2023-05", "yen": 467}, {"month": "2023-06", "yen": 416}, {"month": "2023-07", "yen": 403}, {"month": "2023-08", "yen": 423}, {"month": "2023-09", "yen": 401}, {"month": "2023-10", "yen": 385}, {"month": "2023-11", "yen": 385}, {"month": "2023-12", "yen": 375}, {"month": "2024-01", "yen": 377}, {"month": "2024-02", "yen": 379}, {"month": "2024-03", "yen": 384}, {"month": "2024-04", "yen": 431}, {"month": "2024-05", "yen": 449}, {"month": "2024-06", "yen": 549}, {"month": "2024-07", "yen": 602}, {"month": "2024-08", "yen": 591}, {"month": "2024-09", "yen": 526}, {"month": "2024-10", "yen": 425}, {"month": "2024-11", "yen": 390}, {"month": "2024-12", "yen": 410}, {"month": "2025-01", "yen": 472}, {"month": "2025-02", "yen": 527}, {"month": "2025-03", "yen": 531}, {"month": "2025-04", "yen": 567}, {"month": "2025-05", "yen": 645}, {"month": "2025-06", "yen": 539}, {"month": "2025-07", "yen": 457}, {"month": "2025-08", "yen": 470}, {"month": "2025-09", "yen": 477}, {"month": "2025-10", "yen": 470}, {"month": "2025-11", "yen": 513}, {"month": "2025-12", "yen": 561}, {"month": "2026-01", "yen": 595}, {"month": "2026-02", "yen": 601}, {"month": "2026-03", "yen": 617}, {"month": "2026-04", "yen": 634}, {"month": "2026-05", "yen": 647}, {"month": "2026-06", "yen": 512}, {"month": "2026-07", "yen": 536}]}