График частотности: звездные

[{"date": "2011-09-20", "qty": 3}, {"date": "2012-10-31", "qty": 3}, {"date": "2012-12-26", "qty": 3}, {"date": "2014-05-26", "qty": 4}, {"date": "2015-12-15", "qty": 3}, {"date": "2015-12-16", "qty": 6}, {"date": "2015-12-17", "qty": 7}, {"date": "2015-12-18", "qty": 3}, {"date": "2015-12-19", "qty": 3}, {"date": "2015-12-20", "qty": 3}, {"date": "2015-12-27", "qty": 3}, {"date": "2016-01-07", "qty": 3}, {"date": "2017-05-04", "qty": 3}, {"date": "2017-05-05", "qty": 3}, {"date": "2017-05-06", "qty": 3}, {"date": "2017-05-07", "qty": 3}, {"date": "2017-05-08", "qty": 3}, {"date": "2017-05-09", "qty": 3}, {"date": "2017-12-07", "qty": 3}, {"date": "2017-12-13", "qty": 4}, {"date": "2017-12-16", "qty": 4}, {"date": "2018-07-01", "qty": 3}, {"date": "2025-03-27", "qty": 6}, {"date": "2026-05-18", "qty": 3}]