
          enabled: true,
          textAnchor: 'start',
          style: {
            colors: ['#fff']
          },
          formatter: function (val, opt) {
            return opt.w.globals.labels[opt.dataPointIndex] + ":  " + val
          },
          offsetX: 0,
          dropShadow: {
            enabled: true
          }
        },
        stroke: {
          width: 1,
          colors: ['#fff']
        },
        xaxis: {
          categories: ['South Korea', 'Canada', 'United Kingdom', 'Netherlan