Following initial rescaling, the frequency of further rescaling should be determined by reference to the percentage of products sold that are in the top classes.
Tar éis an athscálaithe thosaigh, ba cheart minicíocht an athscálaithe breise a chinneadh de réir tagairtí do chéatadán na dtáirgí a dhíoltar atá sna haicmí is airde.