function drawChartTreatmentsPerYear() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['2023', 6174],
    ['2022', 5669],
    ['2021', 10173],
    ['2020', 4913],
    ['2019', 5392],
    ['2018', 4820],
    ['2017', 4251],
    ['2016', 6959],
    ['2015', 4978],
    ['2014', 4006],
    ['2013', 6761],
    ['2012', 3889],
    ['2011', 3573],
    ['2010', 3976],
    ['2009', 3033],
    ['Other (235)', 21115]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Year (n=99682)',
    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);