Translate the following English sentence to French:
"Luckily, some Member States, including France since 1996, have taken unilateral initiatives and responsibility for designing national systems which have proven to be transparent, efficient and flexible and which should have been authenticated."
Heureusement, certains États membres, dont la France depuis 1996, ont pris, seuls, l'initiative et la responsabilité de mettre au point des systèmes nationaux qui se sont révélés transparents, efficaces, tout en restant souples. On aurait dû les valider.