График частотности: задачу

[{"date": "2015-03-31", "qty": 3}, {"date": "2017-04-09", "qty": 3}, {"date": "2017-12-27", "qty": 3}, {"date": "2018-10-25", "qty": 3}, {"date": "2018-12-18", "qty": 3}, {"date": "2019-08-27", "qty": 8}, {"date": "2019-10-16", "qty": 3}, {"date": "2020-01-21", "qty": 3}, {"date": "2022-04-18", "qty": 3}, {"date": "2022-07-14", "qty": 3}, {"date": "2023-11-02", "qty": 3}, {"date": "2023-11-08", "qty": 3}, {"date": "2023-11-27", "qty": 6}, {"date": "2023-12-19", "qty": 3}, {"date": "2023-12-21", "qty": 3}, {"date": "2024-02-11", "qty": 15}, {"date": "2024-03-01", "qty": 3}, {"date": "2024-05-13", "qty": 3}, {"date": "2024-07-20", "qty": 6}, {"date": "2024-08-15", "qty": 3}, {"date": "2024-11-05", "qty": 3}, {"date": "2024-11-06", "qty": 3}, {"date": "2024-12-14", "qty": 3}, {"date": "2025-01-28", "qty": 10}, {"date": "2025-03-05", "qty": 3}, {"date": "2025-03-12", "qty": 4}, {"date": "2025-04-11", "qty": 3}, {"date": "2026-01-27", "qty": 4}, {"date": "2026-06-12", "qty": 5}, {"date": "2026-06-13", "qty": 4}]