function drawChartTreatmentsPerYear() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['2000', 4],
    ['1959', 4],
    ['1908', 2],
    ['1883', 3],
    ['1882', 3],
    ['1881', 2],
    ['1880', 2],
    ['1846', 2],
    ['1837', 2],
    ['1825', 4],
    ['1823', 3],
    ['1810', 15],
    ['1801', 5],
    ['1779', 2],
    ['1758', 13],
    ['Other (43)', 44]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Year (n=110)',
    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);