function drawChartTreatmentsPerYear() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['2023', 10913],
    ['2022', 8318],
    ['2021', 10646],
    ['2020', 10068],
    ['2019', 8114],
    ['2018', 8454],
    ['2017', 7981],
    ['2016', 16391],
    ['2015', 6352],
    ['2014', 9325],
    ['2013', 6500],
    ['2012', 5669],
    ['2011', 5893],
    ['2008', 4999],
    ['2007', 4353],
    ['Other (246)', 34554]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Year (n=158530)',
    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);