function drawChartTreatmentsPerYear() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['2012', 10],
    ['2011', 9],
    ['1990', 8],
    ['1985', 24],
    ['1982', 8],
    ['1977', 11],
    ['1974', 9],
    ['1970', 11],
    ['1969', 10],
    ['1965', 5],
    ['1964', 9],
    ['1961', 5],
    ['1959', 9],
    ['1942', 5],
    ['1940', 5],
    ['Other (61)', 144]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Year (n=282)',
    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);