function drawChartTreatmentsPerYear() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['2023', 2813],
    ['2022', 3082],
    ['2021', 2439],
    ['2020', 2597],
    ['2019', 1920],
    ['2018', 2411],
    ['2017', 2645],
    ['2016', 3780],
    ['2015', 2861],
    ['2014', 2572],
    ['2013', 2518],
    ['2012', 2466],
    ['2011', 3210],
    ['2010', 2139],
    ['2009', 1767],
    ['Other (197)', 9435]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Year (n=48655)',
    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);