To become a member of the Club, annual brand sales must exceed one million 9-litre cases. If official data is not available brands are not included - i.e. no estimates.This means the Millionaires Club figures are not taken directly from company production volumes, shipments or depletions figures.International/ Regional brandsTo define a brand as 'International' in the Drinks International Millionaires Club, at least 20 per cent of the brand's sales must be outside its country of origin. However, the brand's known export markets must be taken into account - i.e. export to one or a few other markets in the brand's immediate geographic region does not qualify for 'International' status.'Regional' brands are all those not defined as 'International'. Where there is any doubt, producers whose brands can potentially be included in both 'International' and 'Regional' categories are given the option of which category they are classified in.