График частотности: бумаги

[{"date": "2012-04-13", "qty": 4}, {"date": "2012-04-14", "qty": 3}, {"date": "2012-04-15", "qty": 3}, {"date": "2015-04-22", "qty": 3}, {"date": "2015-07-31", "qty": 3}, {"date": "2015-08-01", "qty": 3}, {"date": "2015-08-02", "qty": 3}, {"date": "2017-06-29", "qty": 5}, {"date": "2019-07-30", "qty": 3}, {"date": "2020-03-21", "qty": 10}, {"date": "2021-02-16", "qty": 4}, {"date": "2022-05-13", "qty": 3}, {"date": "2022-08-24", "qty": 3}, {"date": "2023-02-16", "qty": 4}, {"date": "2023-02-17", "qty": 3}, {"date": "2023-02-18", "qty": 3}, {"date": "2023-02-19", "qty": 3}, {"date": "2023-02-27", "qty": 3}, {"date": "2023-10-29", "qty": 3}, {"date": "2024-03-31", "qty": 3}, {"date": "2024-07-15", "qty": 3}, {"date": "2025-05-29", "qty": 3}, {"date": "2025-06-02", "qty": 4}]