function drawChartTreatmentsPerYear() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['2023', 110],
    ['2022', 219],
    ['2021', 88],
    ['2020', 576],
    ['2018', 85],
    ['2017', 53],
    ['2016', 88],
    ['2015', 329],
    ['2013', 129],
    ['2011', 33],
    ['2010', 36],
    ['2009', 95],
    ['2007', 216],
    ['1976', 39],
    ['1753', 114],
    ['Other (33)', 167]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Year (n=2377)',
    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);