* @return The yield map
*/
public SortedMap<Integer, Integer> getYieldsMap(final String wareId)
{
final SortedMap<Integer, Integer> yields =
new TreeMap<Integer, Integer>(new ReverseIntegerComparator());
// Iterate over all asteroids
for (final Asteroid asteroid : getAsteroids())
{
// If this asteroid is not of the searched type then ignore it