public JsonResult BarChartIndexYearly()
        {
            var            ongoing  = _dataSheetService.DataSheetCountYearly();
            List <BarData> barDatas = new List <BarData>();

            foreach (var item in ongoing.OrderBy(k => k.Month).OrderBy(k => k.Year))
            {
                barDatas.Add(new BarData
                {
                    Name = item.Description,
                    Data = item.Average
                });
            }

            BarChart barChart = new BarChart
            {
                FillColor       = "rgba(173,166,20,1)",
                StrokeColor     = "rgba(220,220,220,0.8)",
                HighlightFill   = "rgba(220,220,220,0.75)",
                HighlightStroke = "rgba(220,220,220,1)",
                Datas           = barDatas
            };

            return(Json(barChart));
        }