График частотности: участницу

[{"date": "2012-03-05", "qty": 3}, {"date": "2012-03-15", "qty": 9}, {"date": "2013-05-06", "qty": 3}, {"date": "2013-05-07", "qty": 3}, {"date": "2015-06-12", "qty": 6}, {"date": "2017-07-26", "qty": 6}, {"date": "2017-07-27", "qty": 5}, {"date": "2017-07-28", "qty": 3}, {"date": "2017-07-29", "qty": 3}, {"date": "2024-02-02", "qty": 3}, {"date": "2024-02-16", "qty": 3}, {"date": "2024-08-15", "qty": 3}, {"date": "2026-02-18", "qty": 3}, {"date": "2026-02-19", "qty": 3}, {"date": "2026-02-20", "qty": 3}, {"date": "2026-02-21", "qty": 3}, {"date": "2026-02-22", "qty": 3}, {"date": "2026-02-23", "qty": 3}, {"date": "2026-02-24", "qty": 3}, {"date": "2026-02-25", "qty": 6}, {"date": "2026-02-26", "qty": 6}, {"date": "2026-02-27", "qty": 6}, {"date": "2026-02-28", "qty": 6}, {"date": "2026-03-01", "qty": 3}]