function drawChartTreatmentsPerYear() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['2023', 81],
    ['2021', 135],
    ['2019', 17],
    ['2017', 42],
    ['2016', 32],
    ['2014', 299],
    ['2013', 288],
    ['2012', 2513],
    ['2011', 90],
    ['2010', 14],
    ['2005', 34],
    ['1953', 20],
    ['1922', 35],
    ['1914', 13],
    ['1895', 22],
    ['Other (40)', 177]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Year (n=3812)',
    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);