Translate the following English sentence to French:
"What stage have the relevant Greek authorities reached in implementing Directives 75/442/EEC, 78/319/EEC, 94/67/EEC, 91/157/EEC and 94/62/EEC?"
À quel stade en est la mise en uvre par les autorités grecques compétentes des directives 75/442/CEE, 78/319/CEE, 94/67/CEE, 91/157/CEE et 94/62/CEE.