График частотности: gangnam

[{"date": "2012-10-26", "qty": 4}, {"date": "2012-12-07", "qty": 11}, {"date": "2012-12-08", "qty": 11}, {"date": "2012-12-09", "qty": 11}, {"date": "2012-12-21", "qty": 3}, {"date": "2013-04-14", "qty": 4}]