function drawChartTreatmentsPerYear() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['2023', 30776],
    ['2022', 28065],
    ['2021', 35130],
    ['2020', 28253],
    ['2019', 26109],
    ['2018', 26100],
    ['2017', 27560],
    ['2016', 39942],
    ['2015', 22219],
    ['2014', 26650],
    ['2013', 21039],
    ['2012', 18584],
    ['2011', 15902],
    ['2010', 13392],
    ['2007', 13666],
    ['Other (255)', 130216]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Year (n=503603)',
    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);