function drawChartTreatmentsPerYear() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['2023', 4922],
    ['2022', 4745],
    ['2021', 6539],
    ['2020', 3161],
    ['2019', 3237],
    ['2018', 3561],
    ['2017', 2997],
    ['2016', 4245],
    ['2015', 3469],
    ['2014', 3077],
    ['2013', 4122],
    ['2012', 2607],
    ['2011', 2296],
    ['2010', 2094],
    ['2007', 3169],
    ['Other (226)', 16206]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Year (n=70447)',
    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);