function drawChartTreatmentsPerYear() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['2023', 181],
    ['2022', 457],
    ['2021', 551],
    ['2020', 81],
    ['2019', 128],
    ['2018', 352],
    ['2017', 173],
    ['2016', 153],
    ['2014', 76],
    ['2007', 597],
    ['2005', 80],
    ['1993', 115],
    ['1972', 254],
    ['1956', 177],
    ['1753', 350],
    ['Other (43)', 408]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Year (n=4133)',
    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);