function drawChartTreatmentsPerYear() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['2009', 11],
    ['2008', 12],
    ['2004', 51],
    ['2003', 72],
    ['2002', 17],
    ['2001', 12],
    ['1992', 17],
    ['1988', 24],
    ['1982', 12],
    ['1972', 12],
    ['1970', 12],
    ['1922', 41],
    ['1902', 14],
    ['1892', 11],
    ['1876', 20],
    ['Other (55)', 226]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Year (n=564)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerYear', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerYear'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerYear);