function drawChartTreatmentsPerYear() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['2022', 18],
    ['2020', 10],
    ['2014', 11],
    ['2001', 6],
    ['1883', 10],
    ['1880', 8],
    ['1874', 10],
    ['1853', 9],
    ['1852', 8],
    ['1851', 9],
    ['1849', 26],
    ['1824', 5],
    ['1822', 7],
    ['1788', 5],
    ['1758', 8],
    ['Other (116)', 223]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Year (n=373)',
    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);