function drawChartTreatmentsPerYear() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['2023', 275],
    ['2022', 427],
    ['2021', 461],
    ['2020', 78],
    ['2019', 84],
    ['2018', 354],
    ['2017', 152],
    ['2016', 92],
    ['2015', 94],
    ['2014', 317],
    ['2013', 146],
    ['2010', 121],
    ['2008', 96],
    ['2007', 58],
    ['2006', 74],
    ['Other (30)', 351]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Year (n=3180)',
    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);