1.For the purposes of this Directive, the European unit of account shall be that defined by Commission Decision No 3289/75/ECSC of 18 December 1975 (1). The equivalent in national currency shall be calculated initially at the rate obtaining on the date of adoption of this Directive.
2.Every five years the Council, acting on a proposal from the Commission, shall examine and, if need be, revise the amounts expressed in European units of account in this Directive, in the light of economic and monetary trends in the Community.