function drawChartTreatmentsPerYear() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['2023', 1204],
    ['2022', 926],
    ['2021', 1168],
    ['2020', 1124],
    ['2019', 1000],
    ['2018', 1616],
    ['2017', 640],
    ['2016', 968],
    ['2015', 636],
    ['2014', 914],
    ['2013', 850],
    ['2012', 679],
    ['2011', 375],
    ['2010', 415],
    ['2009', 386],
    ['Other (68)', 1611]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Year (n=14512)',
    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);