Legend for amCharts

HTML

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js" type="text/javascript"></script>
<script src="https://www.amcharts.com/lib/3/amcharts.js" type="text/javascript"></script>
<script src="https://www.amcharts.com/lib/3/serial.js" type="text/javascript"></script>
<div id="chart_div"></div>

CSS

#chart_div {
    width: 400px;
    height: 400px;
}

JavaScript

$(function () {
   var chart = AmCharts.makeChart("chart_div", {
      type: "serial",
      legend: { },
   		categoryField: "year",
      dataProvider: [
  				{ year: 2007, US: 32, France: 21, UK: 11 },
      		{ year: 2008, US: 22, France: 19, UK: 7 }
   		],
      graphs: [{
         type: "column",
         title: "US",
         valueField: "US",
         fillAlphas: 1,
         fillColors: "red",
         legendColor: "red",
         lineColor: "black",
         lineThickness: 1,
      }, {
         type: "column",
         title: "France",
         valueField: "France",
         fillAlphas: 1,
         fillColors: "green",
         legendColor:  "green",
         lineColor: "black",
         lineThickness: 1,
      }, {
         type: "column",
         title: "UK",
         valueField: "UK",
         fillAlphas: 1,
         fillColors: "blue",
         legendColor: "blue",
         lineColor: "black",
         lineThickness: 1,
      }]
   });
});