function drawChartTreatmentsPerYear() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['2023', 190],
    ['2021', 315],
    ['2016', 60],
    ['2015', 83],
    ['2014', 80],
    ['2013', 137],
    ['2012', 155],
    ['2011', 18],
    ['2009', 49],
    ['2008', 298],
    ['2005', 23],
    ['2004', 231],
    ['1880', 34],
    ['1786', 17],
    ['1758', 26],
    ['Other (43)', 185]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Year (n=1901)',
    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);