Common agricultural policy activities, however, are based on the central rates, and the activities of some sectors, which apply the EUA simply as a point of reference for administrative purposes, use a rate which is generally valid for one year.
Tassi dell'ECU/UCE politica agricola comune, basate sui tassi centrali e di taluni settori che, utilizzando l'UCE a titolo di semplice riferimento amministrativo, impiegano un tasso valido, in genere, un anno.