function drawChartTreatmentsPerYear() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['2022', 8],
    ['2021', 22],
    ['2020', 11],
    ['2019', 12],
    ['2018', 27],
    ['2015', 95],
    ['2014', 21],
    ['2010', 22],
    ['2005', 16],
    ['1998', 7],
    ['1972', 8],
    ['1901', 7],
    ['1856', 12],
    ['1853', 7],
    ['1810', 7],
    ['Other (101)', 223]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Year (n=505)',
    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);