function drawChartTreatmentsPerYear() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['2023', 229],
    ['2021', 59],
    ['2020', 73],
    ['2018', 15],
    ['2017', 10],
    ['2016', 10],
    ['2014', 13],
    ['2005', 73],
    ['1790', 11],
    ['1777', 15],
    ['1775', 93],
    ['1767', 11],
    ['1764', 19],
    ['1761', 11],
    ['1758', 200],
    ['Other (35)', 101]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Year (n=943)',
    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);