  Evolution of sub-indices over time in <b>{{region}}</b>
  <div class="plot-place" *ngIf="dataLoaded; else loading">
    <plotly-plot [data]="data" [layout]="plotlyLayout" [config]="plotlyConfig" [className]="'plotly-plot'"
      [useResizeHandler]="true"></plotly-plot>
  </div>
  <ng-template #loading> Loading data... </ng-template>
