4 or the number of years preceding year N for which capacity and production data are available for the Member State in question, whichever is lower.
4 nó an líon de bhlianta roimh bhliain N lena bhfuil sonraí faoin toilleadh agus táirgeachta ar fáil don Bhallstát atá i gceist, cibé acu is ísle.