График частотности: кобзон

[{"date": "2011-10-26", "qty": 3}, {"date": "2012-02-07", "qty": 3}, {"date": "2013-02-04", "qty": 3}, {"date": "2013-10-03", "qty": 3}, {"date": "2014-08-14", "qty": 3}, {"date": "2014-08-19", "qty": 3}, {"date": "2014-10-27", "qty": 5}, {"date": "2014-10-28", "qty": 6}, {"date": "2014-12-16", "qty": 3}, {"date": "2015-02-16", "qty": 40}, {"date": "2015-02-18", "qty": 3}, {"date": "2015-02-22", "qty": 7}, {"date": "2015-08-08", "qty": 3}, {"date": "2015-08-09", "qty": 3}, {"date": "2015-08-10", "qty": 3}, {"date": "2015-08-11", "qty": 3}, {"date": "2015-08-29", "qty": 3}, {"date": "2016-12-07", "qty": 3}, {"date": "2017-08-29", "qty": 3}, {"date": "2017-09-02", "qty": 4}, {"date": "2017-09-10", "qty": 3}, {"date": "2017-11-18", "qty": 3}, {"date": "2017-12-05", "qty": 5}, {"date": "2018-04-17", "qty": 6}, {"date": "2018-05-14", "qty": 3}, {"date": "2018-07-27", "qty": 4}, {"date": "2018-08-30", "qty": 11}]