function drawChartTreatmentsPerYear() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['2022', 5],
    ['2019', 97],
    ['2016', 103],
    ['2015', 11],
    ['2014', 37],
    ['2012', 6],
    ['1866', 3],
    ['1855', 3],
    ['1852', 3],
    ['1844', 2],
    ['1841', 5],
    ['1805', 3],
    ['1801', 4],
    ['1774', 23],
    ['1758', 53],
    ['Other (24)', 26]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Year (n=384)',
    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);