{"updated": "2026-09-19", "item": "ケーキ", "unit": "1個", "item_code": "1712", "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": 1.3, "from": {"month": "2020-01", "yen": 413}, "to": {"month": "2026-07", "yen": 537}, "months": [{"month": "2020-01", "yen": 413}, {"month": "2020-02", "yen": 413}, {"month": "2020-03", "yen": 408}, {"month": "2020-04", "yen": 413}, {"month": "2020-05", "yen": 408}, {"month": "2020-06", "yen": 409}, {"month": "2020-07", "yen": 413}, {"month": "2020-08", "yen": 413}, {"month": "2020-09", "yen": 413}, {"month": "2020-10", "yen": 413}, {"month": "2020-11", "yen": 414}, {"month": "2020-12", "yen": 414}, {"month": "2021-01", "yen": 414}, {"month": "2021-02", "yen": 414}, {"month": "2021-03", "yen": 414}, {"month": "2021-04", "yen": 417}, {"month": "2021-05", "yen": 421}, {"month": "2021-06", "yen": 417}, {"month": "2021-07", "yen": 411}, {"month": "2021-08", "yen": 417}, {"month": "2021-09", "yen": 418}, {"month": "2021-10", "yen": 418}, {"month": "2021-11", "yen": 418}, {"month": "2021-12", "yen": 421}, {"month": "2022-01", "yen": 427}, {"month": "2022-02", "yen": 421}, {"month": "2022-03", "yen": 421}, {"month": "2022-04", "yen": 427}, {"month": "2022-05", "yen": 423}, {"month": "2022-06", "yen": 433}, {"month": "2022-07", "yen": 429}, {"month": "2022-08", "yen": 429}, {"month": "2022-09", "yen": 436}, {"month": "2022-10", "yen": 441}, {"month": "2022-11", "yen": 441}, {"month": "2022-12", "yen": 448}, {"month": "2023-01", "yen": 450}, {"month": "2023-02", "yen": 450}, {"month": "2023-03", "yen": 450}, {"month": "2023-04", "yen": 460}, {"month": "2023-05", "yen": 465}, {"month": "2023-06", "yen": 462}, {"month": "2023-07", "yen": 461}, {"month": "2023-08", "yen": 464}, {"month": "2023-09", "yen": 466}, {"month": "2023-10", "yen": 467}, {"month": "2023-11", "yen": 467}, {"month": "2023-12", "yen": 470}, {"month": "2024-01", "yen": 470}, {"month": "2024-02", "yen": 470}, {"month": "2024-03", "yen": 470}, {"month": "2024-04", "yen": 470}, {"month": "2024-05", "yen": 470}, {"month": "2024-06", "yen": 468}, {"month": "2024-07", "yen": 466}, {"month": "2024-08", "yen": 468}, {"month": "2024-09", "yen": 468}, {"month": "2024-10", "yen": 479}, {"month": "2024-11", "yen": 483}, {"month": "2024-12", "yen": 486}, {"month": "2025-01", "yen": 486}, {"month": "2025-02", "yen": 491}, {"month": "2025-03", "yen": 492}, {"month": "2025-04", "yen": 512}, {"month": "2025-05", "yen": 512}, {"month": "2025-06", "yen": 512}, {"month": "2025-07", "yen": 512}, {"month": "2025-08", "yen": 518}, {"month": "2025-09", "yen": 518}, {"month": "2025-10", "yen": 520}, {"month": "2025-11", "yen": 524}, {"month": "2025-12", "yen": 527}, {"month": "2026-01", "yen": 528}, {"month": "2026-02", "yen": 528}, {"month": "2026-03", "yen": 528}, {"month": "2026-04", "yen": 533}, {"month": "2026-05", "yen": 527}, {"month": "2026-06", "yen": 527}, {"month": "2026-07", "yen": 537}]}