function drawChartTreatmentsPerYear() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['2023', 336],
    ['2022', 466],
    ['2021', 159],
    ['2020', 90],
    ['2019', 52],
    ['2018', 132],
    ['2016', 178],
    ['2015', 95],
    ['2014', 219],
    ['2012', 67],
    ['2010', 58],
    ['2007', 132],
    ['1976', 43],
    ['1922', 56],
    ['1753', 74],
    ['Other (65)', 415]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Year (n=2572)',
    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);