График частотности: демонстрантов

[{"date": "2011-01-30", "qty": 11}, {"date": "2011-02-01", "qty": 3}, {"date": "2011-02-04", "qty": 9}, {"date": "2011-02-05", "qty": 7}, {"date": "2011-02-14", "qty": 10}, {"date": "2011-02-20", "qty": 3}, {"date": "2011-02-22", "qty": 4}, {"date": "2011-02-26", "qty": 6}, {"date": "2011-04-05", "qty": 3}, {"date": "2011-04-23", "qty": 12}, {"date": "2011-05-17", "qty": 3}, {"date": "2011-06-25", "qty": 6}, {"date": "2011-06-26", "qty": 11}, {"date": "2011-06-29", "qty": 3}, {"date": "2011-07-11", "qty": 3}, {"date": "2011-07-31", "qty": 3}, {"date": "2011-11-20", "qty": 3}, {"date": "2012-02-05", "qty": 3}, {"date": "2012-06-02", "qty": 5}, {"date": "2012-06-03", "qty": 4}, {"date": "2013-06-02", "qty": 3}, {"date": "2013-06-16", "qty": 5}, {"date": "2013-06-17", "qty": 5}, {"date": "2013-12-01", "qty": 3}, {"date": "2013-12-04", "qty": 3}, {"date": "2013-12-09", "qty": 3}, {"date": "2014-11-29", "qty": 3}, {"date": "2015-07-25", "qty": 4}, {"date": "2018-11-24", "qty": 4}, {"date": "2019-04-12", "qty": 3}]