@Override
public Map<Integer, Double> getAnnuallyOfferingVolumes() {
final PreparedQuery pq = db.prepare(new Query(Offering.class.getSimpleName()));
final ListQueryResult r = copy.entitiesToDtoArray(Offering.class.getSimpleName(), pq.countEntities(withDefaults()), pq.asIterable(withDefaults()), false);
return new OfferingReports().getAnnuallyOfferingVolumes(r.getResults());
}