function drawChartTreatmentsPerYear() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['2024', 4],
    ['2012', 4],
    ['1992', 7],
    ['1991', 4],
    ['1985', 4],
    ['1981', 3],
    ['1980', 3],
    ['1976', 3],
    ['1969', 3],
    ['1963', 4],
    ['1962', 5],
    ['1958', 3],
    ['1957', 3],
    ['1950', 3],
    ['1938', 4],
    ['Other (38)', 58]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Year (n=115)',
    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);