График частотности: пытаясь

[{"date": "2013-06-07", "qty": 3}, {"date": "2013-07-10", "qty": 3}, {"date": "2013-07-19", "qty": 3}, {"date": "2013-07-20", "qty": 3}, {"date": "2013-07-21", "qty": 3}, {"date": "2017-04-26", "qty": 5}, {"date": "2017-05-16", "qty": 5}, {"date": "2017-06-30", "qty": 7}, {"date": "2017-07-01", "qty": 7}, {"date": "2017-07-02", "qty": 7}, {"date": "2017-07-17", "qty": 5}, {"date": "2017-07-18", "qty": 5}, {"date": "2017-07-19", "qty": 3}, {"date": "2017-07-24", "qty": 3}, {"date": "2017-08-30", "qty": 4}, {"date": "2017-08-31", "qty": 4}, {"date": "2021-11-15", "qty": 3}, {"date": "2024-03-15", "qty": 3}, {"date": "2024-05-12", "qty": 3}, {"date": "2024-10-31", "qty": 3}, {"date": "2024-12-21", "qty": 3}, {"date": "2025-07-11", "qty": 3}, {"date": "2025-07-12", "qty": 3}, {"date": "2025-07-13", "qty": 3}, {"date": "2026-02-07", "qty": 3}]