function drawChartTreatmentsPerYear() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['2023', 3376],
    ['2022', 3394],
    ['2021', 4735],
    ['2020', 3940],
    ['2019', 3145],
    ['2018', 3503],
    ['2017', 2856],
    ['2016', 6545],
    ['2015', 3647],
    ['2014', 3158],
    ['2013', 3090],
    ['2012', 2300],
    ['2011', 2236],
    ['2010', 2497],
    ['2009', 1925],
    ['Other (205)', 12594]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Year (n=62941)',
    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);