График частотности: создаст

[{"date": "2014-08-04", "qty": 3}, {"date": "2014-10-28", "qty": 3}, {"date": "2015-06-17", "qty": 3}, {"date": "2015-10-02", "qty": 4}, {"date": "2015-10-04", "qty": 4}, {"date": "2015-10-29", "qty": 3}, {"date": "2015-11-03", "qty": 4}, {"date": "2015-11-07", "qty": 4}, {"date": "2015-12-24", "qty": 3}, {"date": "2016-02-19", "qty": 3}, {"date": "2017-04-20", "qty": 4}, {"date": "2017-04-21", "qty": 3}, {"date": "2017-10-26", "qty": 3}, {"date": "2017-11-10", "qty": 3}, {"date": "2017-11-11", "qty": 3}, {"date": "2019-03-17", "qty": 3}, {"date": "2019-05-02", "qty": 4}, {"date": "2019-06-07", "qty": 4}, {"date": "2019-06-10", "qty": 4}, {"date": "2019-07-14", "qty": 3}, {"date": "2019-07-25", "qty": 3}, {"date": "2019-07-31", "qty": 3}, {"date": "2019-08-13", "qty": 4}, {"date": "2020-06-17", "qty": 3}, {"date": "2020-08-13", "qty": 3}, {"date": "2021-02-19", "qty": 3}, {"date": "2021-05-31", "qty": 3}, {"date": "2022-08-05", "qty": 3}, {"date": "2022-08-06", "qty": 3}, {"date": "2022-08-07", "qty": 3}]