Morris chart -如何在“水平:真”条形图上显示每个条形图的值？

<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/morris.js/0.5.1/morris.css">
<script src="https://cdnjs.cloudflare.com/ajax/libs/raphael/2.2.7/raphael.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/morris.js/0.5.1/morris.min.js"></script>

<div id="bar-chart"></div>

Morris.Bar({
  element: 'bar-chart',
  data: [
    { x: 'A', y: 3 },
    { x: 'B', y: 5 },
    { x: 'C', y: 2 },
    { x: 'D', y: 6 },
    { x: 'E', y: 4 }
  ],
  xkey: 'x',
  ykeys: ['y'],
  labels: ['Value'],
  labelColor: '#000',
  horizontal: true
});