function drawChartTreatmentsPerYear() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['2023', 36591],
    ['2022', 29430],
    ['2021', 38816],
    ['2020', 39167],
    ['2019', 31327],
    ['2018', 32641],
    ['2017', 35372],
    ['2016', 52823],
    ['2015', 29190],
    ['2014', 33921],
    ['2013', 29963],
    ['2012', 26927],
    ['2011', 21454],
    ['2010', 19693],
    ['2009', 17395],
    ['Other (248)', 109626]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Year (n=584336)',
    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);