council decis amend decis ec extern auditor nation central bank extern auditor national bank van belgië banqu national de belgiqu bank greec ec council european union regard protocol statut european system central bank european central bank annex treati establish european commun articl thereof regard recommend ecb ecb european central bank april council european union extern auditor bank greec national bank van belgië banqu national de belgiqu account european central bank ecb nation central bank eurosystem audit independ extern auditor recommend govern council ecb approv council european union mandat current extern auditor national bank van belgië banqu national de belgiqu hereinaft nbb bnb expir renew appoint extern auditor financi year nbb bnb select ernst amp young bedrijfsrevisoren réviseur entrepris extern auditor accord public procur rule ecb consid select auditor fulfil requir appoint govern council ecb recommend mandat extern auditor year renew law greec extern auditor appoint financi year mandat charalambo stathaki current extern auditor renew bank greec law greec retain ernst amp young hella certifi auditor sa extern auditor provid partner charg rotat bank greec decid ernst amp young hella certifi auditor sa sole extern auditor financi year ecb consid compani fulfil requir appoint govern council ecb recommend exist mandat extern auditor continu renew period year follow recommend govern council ecb amend decis ec decid articl articl decis ec replac quot ernst amp young bedrijfsrevisoren réviseur entrepris approv extern auditor national bank van belgië banqu national de belgiqu financi year period year period renew quot articl articl decis ec replac quot ernst amp young hella certifi auditor sa approv extern auditor bank greec financi year renew period year quot articl decis notifi ecb articl decis publish offici journal european union brussel council presid krecké oj oj oj decis amend decis ec oj