function drawChartTreatmentsPerYear() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['2023', 409],
    ['2022', 835],
    ['2021', 1656],
    ['2018', 108],
    ['2014', 134],
    ['2013', 159],
    ['2012', 101],
    ['2007', 169],
    ['2005', 87],
    ['2001', 131],
    ['1980', 240],
    ['1976', 83],
    ['1972', 85],
    ['1929', 89],
    ['1911', 120],
    ['Other (86)', 1352]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Year (n=5758)',
    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);