On the basis of figures for aggregate GNP at market prices and its components from the preceding year, supplied by the Member States in accordance with Article 3 (2) of Directive 89/130/EEC, Euratom, each Member State shall be debited with an amount calculated by applying to GNP the uniform rate adopted for the previous financial year, amended, where appropriate, in the light of any use of the EAGGF monetary reserve, and credited with 12 payments made during that previous financial year.