function drawChartTreatmentsPerYear() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['2023', 3702],
    ['2022', 7888],
    ['2021', 6592],
    ['2020', 2346],
    ['2019', 1981],
    ['2018', 4188],
    ['2017', 1657],
    ['2016', 1694],
    ['2015', 1307],
    ['2014', 2005],
    ['2011', 1145],
    ['2007', 7501],
    ['1976', 2858],
    ['1956', 1620],
    ['1753', 2462],
    ['Other (189)', 9236]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Year (n=58182)',
    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);