function drawChartTreatmentsPerYear() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['2023', 136],
    ['2022', 61],
    ['2021', 307],
    ['2020', 57],
    ['2019', 99],
    ['2018', 173],
    ['2017', 90],
    ['2016', 245],
    ['2015', 213],
    ['2014', 70],
    ['2011', 142],
    ['2010', 303],
    ['2003', 102],
    ['1908', 41],
    ['1830', 71],
    ['Other (34)', 280]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Year (n=2390)',
    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);