function drawChartTreatmentsPerYear() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['2023', 675],
    ['2022', 104],
    ['2021', 176],
    ['2020', 227],
    ['2019', 162],
    ['2018', 118],
    ['2017', 77],
    ['2016', 412],
    ['2015', 537],
    ['2014', 124],
    ['2012', 146],
    ['2011', 128],
    ['2010', 91],
    ['2009', 75],
    ['2006', 271],
    ['Other (59)', 334]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Year (n=3657)',
    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);