График частотности: вого

[{"date": "2011-10-28", "qty": 6}, {"date": "2011-10-29", "qty": 3}, {"date": "2012-10-27", "qty": 4}, {"date": "2012-10-28", "qty": 9}, {"date": "2014-10-21", "qty": 3}, {"date": "2015-03-21", "qty": 3}, {"date": "2015-06-22", "qty": 3}, {"date": "2017-10-29", "qty": 7}, {"date": "2017-10-30", "qty": 6}, {"date": "2017-10-31", "qty": 5}, {"date": "2017-11-01", "qty": 5}, {"date": "2017-11-14", "qty": 4}, {"date": "2017-11-15", "qty": 3}, {"date": "2018-11-30", "qty": 3}, {"date": "2019-04-21", "qty": 3}, {"date": "2020-01-19", "qty": 3}]