function drawChartTreatmentsPerYear() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['2023', 187],
    ['2022', 377],
    ['2021', 100],
    ['2020', 185],
    ['2019', 434],
    ['2018', 297],
    ['2017', 170],
    ['2016', 105],
    ['2014', 94],
    ['2013', 83],
    ['2012', 218],
    ['2011', 90],
    ['2008', 66],
    ['2006', 67],
    ['1880', 128],
    ['Other (31)', 286]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Year (n=2887)',
    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);