График частотности: продление

[{"date": "2011-03-04", "qty": 3}, {"date": "2015-02-27", "qty": 4}, {"date": "2015-06-17", "qty": 3}, {"date": "2015-06-24", "qty": 6}, {"date": "2015-12-09", "qty": 6}, {"date": "2015-12-18", "qty": 3}, {"date": "2016-02-16", "qty": 3}, {"date": "2016-04-20", "qty": 3}, {"date": "2018-01-19", "qty": 3}, {"date": "2018-01-21", "qty": 3}, {"date": "2018-06-18", "qty": 3}, {"date": "2018-06-29", "qty": 7}, {"date": "2019-12-13", "qty": 3}, {"date": "2020-04-02", "qty": 3}, {"date": "2020-08-18", "qty": 3}, {"date": "2020-10-22", "qty": 3}, {"date": "2021-02-03", "qty": 4}, {"date": "2021-06-29", "qty": 3}, {"date": "2022-11-17", "qty": 4}, {"date": "2022-12-29", "qty": 3}, {"date": "2023-02-16", "qty": 3}, {"date": "2023-03-18", "qty": 3}, {"date": "2023-05-17", "qty": 3}]