function drawChartTreatmentsPerYear() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['2023', 6343],
    ['2022', 5681],
    ['2021', 10301],
    ['2020', 4980],
    ['2019', 5459],
    ['2018', 4826],
    ['2017', 4311],
    ['2016', 7099],
    ['2015', 5000],
    ['2014', 4020],
    ['2013', 6780],
    ['2012', 3892],
    ['2011', 3575],
    ['2010', 4009],
    ['2009', 3058],
    ['Other (235)', 21238]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Year (n=100572)',
    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);