function drawChartTreatmentsPerYear() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['2023', 289],
    ['2022', 292],
    ['2021', 897],
    ['2020', 598],
    ['2019', 596],
    ['2018', 593],
    ['2017', 624],
    ['2016', 3866],
    ['2015', 744],
    ['2014', 1542],
    ['2013', 952],
    ['2012', 729],
    ['2011', 495],
    ['2010', 370],
    ['2008', 295],
    ['Other (75)', 1164]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Year (n=14046)',
    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);