График частотности: получения

[{"date": "2011-07-20", "qty": 3}, {"date": "2012-06-19", "qty": 3}, {"date": "2012-07-09", "qty": 3}, {"date": "2012-09-08", "qty": 3}, {"date": "2012-11-29", "qty": 4}, {"date": "2012-11-30", "qty": 3}, {"date": "2012-12-01", "qty": 3}, {"date": "2012-12-06", "qty": 3}, {"date": "2013-02-22", "qty": 5}, {"date": "2014-10-27", "qty": 7}, {"date": "2015-05-23", "qty": 3}, {"date": "2015-09-14", "qty": 3}, {"date": "2016-04-28", "qty": 3}, {"date": "2017-06-27", "qty": 3}, {"date": "2019-04-27", "qty": 3}, {"date": "2019-04-28", "qty": 3}, {"date": "2019-07-19", "qty": 3}, {"date": "2019-09-10", "qty": 3}, {"date": "2019-10-08", "qty": 3}, {"date": "2022-01-29", "qty": 3}, {"date": "2022-07-09", "qty": 4}, {"date": "2022-07-10", "qty": 4}, {"date": "2022-07-11", "qty": 4}, {"date": "2023-04-11", "qty": 3}]