function drawChartTreatmentsPerYear() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['2023', 4733],
    ['2022', 5412],
    ['2021', 7438],
    ['2020', 3189],
    ['2019', 4094],
    ['2018', 4240],
    ['2017', 3121],
    ['2016', 4037],
    ['2015', 2892],
    ['2014', 3119],
    ['2013', 4060],
    ['2012', 2410],
    ['2011', 2247],
    ['2007', 4152],
    ['2005', 2364],
    ['Other (233)', 18982]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Year (n=76490)',
    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);