function drawChartTreatmentsPerYear() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['2023', 118],
    ['2022', 51],
    ['2021', 33],
    ['2020', 33],
    ['2019', 146],
    ['2017', 160],
    ['2016', 48],
    ['2014', 361],
    ['2013', 75],
    ['2012', 47],
    ['2010', 57],
    ['2008', 88],
    ['1940', 71],
    ['1923', 33],
    ['1922', 37],
    ['Other (39)', 285]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Year (n=1643)',
    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);