Calculation of the twelfths for January of each financial year shall be based on the amounts provided for in the draft budget, with the exception of the amounts for financing the EAGGF monetary reserve, referred to in Article 78 (3) of the ECSC Treaty, Article 203 (3) of the EEC Treaty and Article 177 (3) of the EAEC Treaty and converted into national currencies at the rates of exchange of the first day of quotation following 15 December of the calendar year preceding the budget year; the adjustment shall be made with the entry for the following month.