График частотности: сложить

[{"date": "2012-04-01", "qty": 3}, {"date": "2013-02-20", "qty": 3}, {"date": "2013-10-14", "qty": 3}, {"date": "2014-06-16", "qty": 3}, {"date": "2016-07-22", "qty": 3}, {"date": "2023-07-02", "qty": 3}, {"date": "2024-02-16", "qty": 4}, {"date": "2024-11-30", "qty": 3}, {"date": "2025-02-27", "qty": 4}, {"date": "2025-03-14", "qty": 3}, {"date": "2025-06-16", "qty": 3}, {"date": "2025-10-13", "qty": 3}, {"date": "2025-10-14", "qty": 4}, {"date": "2025-10-15", "qty": 4}, {"date": "2025-10-16", "qty": 4}, {"date": "2025-10-17", "qty": 4}, {"date": "2025-10-18", "qty": 4}, {"date": "2025-10-19", "qty": 4}, {"date": "2025-10-20", "qty": 4}, {"date": "2025-10-21", "qty": 4}, {"date": "2025-10-22", "qty": 4}, {"date": "2025-10-23", "qty": 4}, {"date": "2025-10-24", "qty": 4}, {"date": "2025-10-26", "qty": 4}, {"date": "2025-10-27", "qty": 4}, {"date": "2025-10-28", "qty": 4}, {"date": "2025-10-29", "qty": 5}, {"date": "2025-10-30", "qty": 22}, {"date": "2025-10-31", "qty": 4}, {"date": "2025-11-01", "qty": 4}]