function drawChartTreatmentsPerYear() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['2023', 1692],
    ['2022', 2081],
    ['2021', 1972],
    ['2020', 1572],
    ['2019', 2241],
    ['2018', 1409],
    ['2017', 1782],
    ['2016', 2981],
    ['2015', 1594],
    ['2014', 1654],
    ['2013', 748],
    ['2012', 1146],
    ['2011', 786],
    ['2010', 925],
    ['2008', 931],
    ['Other (198)', 6741]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Year (n=30255)',
    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);