<script type="text/javascript" src="https://www.google.com/jsapi";></
script>
    <script type="text/javascript">



      function drawChart() {
        var data = new google.visualization.DataTable();
        data.addColumn('string', 'Month');
        data.addColumn('number', 'Passengers');
        <%
        if(hmChart!=null)
        {
        Iterator itData = hmChart.keySet().iterator();
        String year="";
        int count=0;
        while(itData.hasNext())
        {
            year = itData.next().toString();
            count = hmChart.get(year);%>
                data.addRow(['<%= year%>', <%=count%>]);
        <%}}%>

        var options = {
          width: 400, height: 240,
          title: 'Company Performance'
        };

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

      }
      google.setOnLoadCallback(drawChart());
    </script>

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