function createPie(data, year) {
  console.debug(data);
  var charts = L.featureGroup();

  for (var i = 0; i < data.features.length; i++) {
    var d = data.features[i].properties;
    var latlng = data.features[i].geometry.coordinates;
    if (d.YR == year) {
      var pieData = {values: [
        d.TrawlPerc,
        d.PursesPerc,
        d.BoatsePerc,
        d.otherPerc
      ], labels: ['trawl', 'purses', 'boatse', 'other']};
      let chart = new PieChartMarker([latlng[1], latlng[0]], pieData, {
            icon: L.divIcon({className: 'leaflet-pie-chart-marker'}),
            width: 60,
            height: 60,
            colors: ['#ff0000', '#00ff00', '#0000ff', '#ff00ff']
        });
      charts.addLayer(chart);
    }
  }
  return charts;
}