function drawChartTreatmentsPerYear() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['2023', 7876],
    ['2022', 7014],
    ['2021', 8678],
    ['2020', 7688],
    ['2019', 6870],
    ['2018', 7290],
    ['2017', 8081],
    ['2016', 10808],
    ['2015', 5866],
    ['2014', 7661],
    ['2013', 6125],
    ['2012', 5231],
    ['2011', 4160],
    ['2010', 3825],
    ['2007', 3724],
    ['Other (253)', 37920]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Year (n=138817)',
    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);