function drawChartTreatmentsPerYear() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['2023', 125],
    ['2022', 204],
    ['2019', 31],
    ['2017', 150],
    ['2016', 22],
    ['2015', 75],
    ['2014', 78],
    ['2013', 29],
    ['2011', 379],
    ['2009', 40],
    ['2008', 62],
    ['2007', 106],
    ['2005', 79],
    ['2004', 32],
    ['1984', 27],
    ['Other (11)', 71]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Year (n=1510)',
    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);