function drawChartTreatmentsPerYear() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['2023', 118],
    ['2022', 597],
    ['2021', 393],
    ['2020', 228],
    ['2019', 464],
    ['2018', 290],
    ['2017', 305],
    ['2016', 259],
    ['2014', 146],
    ['2013', 302],
    ['2012', 111],
    ['2011', 179],
    ['2010', 167],
    ['2009', 97],
    ['2007', 101],
    ['Other (63)', 927]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Year (n=4684)',
    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);