Google Chart Pie Chart

HTML

<script src="http://www.google.com/jsapi?fake=.js"></script>
<div id="chart_div" style="width: 900px; height: 500px;"></div>

JavaScript

google.load("visualization", "1", {packages:["corechart"]});
      google.setOnLoadCallback(drawChart);
      
      function drawChart() {
          var buckets = [
					{
						"key": "User request 001.",
						"doc_count": 1
					},
					{
						"key": "User request 002.",
						"doc_count": 2
					}
				];
		  
      	var requests = [['Type', 'Number of requests']];
      	for(var i in buckets) {
        	requests.push([buckets[i].key, buckets[i].doc_count]);
      	}
     
        var data = google.visualization.arrayToDataTable(requests);

        var options = {
          title: 'My Daily Activities'
        };

        var chart = new google.visualization.PieChart(document.getElementById('chart_div'));
        chart.draw(data, options);
      }