function drawChartTreatmentsPerYear() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['2023', 177],
    ['2022', 275],
    ['2021', 196],
    ['2020', 83],
    ['2019', 53],
    ['2018', 96],
    ['2017', 205],
    ['2014', 92],
    ['2013', 102],
    ['2011', 137],
    ['2007', 147],
    ['1988', 59],
    ['1976', 62],
    ['1927', 100],
    ['1753', 69],
    ['Other (62)', 494]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Year (n=2347)',
    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);