function drawChartTreatmentsPerYear() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['2023', 4],
    ['2022', 35],
    ['2011', 5],
    ['2010', 10],
    ['1980', 7],
    ['1979', 2],
    ['1978', 15],
    ['1971', 13],
    ['1954', 34],
    ['1944', 9],
    ['1942', 6],
    ['1924', 4],
    ['1923', 2],
    ['1916', 47],
    ['1753', 3],
    ['Other (18)', 23]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Year (n=219)',
    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);