График частотности: греф

[{"date": "2017-12-10", "qty": 3}, {"date": "2017-12-12", "qty": 4}, {"date": "2018-03-28", "qty": 3}, {"date": "2018-06-08", "qty": 6}, {"date": "2018-06-09", "qty": 3}, {"date": "2018-09-12", "qty": 4}, {"date": "2018-12-17", "qty": 3}, {"date": "2019-02-15", "qty": 4}, {"date": "2019-04-16", "qty": 3}, {"date": "2019-05-24", "qty": 6}, {"date": "2019-06-06", "qty": 3}, {"date": "2019-09-13", "qty": 3}, {"date": "2019-09-14", "qty": 3}, {"date": "2019-09-15", "qty": 3}, {"date": "2019-11-08", "qty": 3}, {"date": "2019-12-05", "qty": 3}, {"date": "2020-03-26", "qty": 3}, {"date": "2020-04-21", "qty": 3}, {"date": "2020-09-24", "qty": 3}, {"date": "2020-12-24", "qty": 3}, {"date": "2022-11-10", "qty": 3}, {"date": "2023-11-24", "qty": 3}, {"date": "2023-12-12", "qty": 3}, {"date": "2024-03-06", "qty": 3}, {"date": "2025-09-04", "qty": 5}, {"date": "2025-11-10", "qty": 3}, {"date": "2025-11-19", "qty": 4}, {"date": "2025-11-26", "qty": 3}, {"date": "2026-02-26", "qty": 3}, {"date": "2026-06-30", "qty": 3}]