function drawChartTreatmentsPerYear() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['2023', 1291],
    ['2022', 2014],
    ['2021', 3559],
    ['2020', 524],
    ['2019', 482],
    ['2018', 1118],
    ['2016', 1244],
    ['2014', 1106],
    ['2013', 568],
    ['2011', 485],
    ['2008', 403],
    ['2007', 1338],
    ['1972', 838],
    ['1956', 730],
    ['1753', 512],
    ['Other (142)', 3576]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Year (n=19788)',
    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);