График частотности: заработать

[{"date": "2017-11-27", "qty": 3}, {"date": "2018-01-12", "qty": 5}, {"date": "2018-01-13", "qty": 5}, {"date": "2018-01-14", "qty": 5}, {"date": "2018-03-30", "qty": 3}, {"date": "2018-06-29", "qty": 3}, {"date": "2018-06-30", "qty": 3}, {"date": "2018-10-16", "qty": 3}, {"date": "2018-12-19", "qty": 9}, {"date": "2018-12-22", "qty": 3}, {"date": "2018-12-23", "qty": 3}, {"date": "2019-02-08", "qty": 3}, {"date": "2019-03-29", "qty": 4}, {"date": "2019-04-26", "qty": 3}, {"date": "2019-04-27", "qty": 3}, {"date": "2019-05-31", "qty": 4}, {"date": "2019-07-23", "qty": 3}, {"date": "2019-08-29", "qty": 3}, {"date": "2019-09-20", "qty": 3}, {"date": "2019-12-10", "qty": 3}, {"date": "2020-01-30", "qty": 3}, {"date": "2020-02-06", "qty": 4}, {"date": "2020-03-10", "qty": 3}, {"date": "2020-08-12", "qty": 3}, {"date": "2020-08-21", "qty": 3}, {"date": "2020-08-22", "qty": 3}, {"date": "2020-08-23", "qty": 3}, {"date": "2021-03-29", "qty": 3}, {"date": "2021-04-27", "qty": 3}, {"date": "2022-07-05", "qty": 3}]