Når antallet af centralbankchefer overstiger 15, og indtil det udgør 22, inddeles centralbankcheferne i to grupper på grundlag af en fordeling efter størrelsen af deres nationale centralbanks medlemsstatsandel af det aggregerede bruttonationalprodukt i markedspriser og af den samlede aggregerede balance for de monetære finansielle institutioner i de medlemsstater, der har euroen som valuta.  
as from the date on which the number of governors exceeds 15 and until it reaches 22, the governors shall be allocated to two groups, according to a ranking of the size of the share of their national central bank's Member State in the aggregate gross domestic product at market prices and in the total aggregated balance sheet of the monetary financial institutions of the Member States whose currency is the euro.  