how to make on the top value of bar chart js code example

Example: chartjs bar data on top

options: {
    "hover": {
      "animationDuration": 0
    },
    "animation": {
      "duration": 1,
      "onComplete": function() {
        var chartInstance = this.chart,
          ctx = chartInstance.ctx;

        ctx.font = Chart.helpers.fontString(Chart.defaults.global.defaultFontSize, Chart.defaults.global.defaultFontStyle, Chart.defaults.global.defaultFontFamily);
        ctx.textAlign = 'center';
        ctx.textBaseline = 'bottom';

        this.data.datasets.forEach(function(dataset, i) {
          var meta = chartInstance.controller.getDatasetMeta(i);
          meta.data.forEach(function(bar, index) {
            var data = dataset.data[index];
            ctx.fillText(data, bar._model.x, bar._model.y - 5);
          });
        });
      }
    },
    legend: {
      "display": false
    }
}