Translate the following English sentence to French:
"We have just declared ourselves in favour, much to my satisfaction, of warnings that will cover 35% of the front and 45% of the back of the cigarette packet."
Nous venons de nous prononcer, et je m' en réjouis, en faveur d' avertissements qui couvriront 35 % de la face avant et 45 % de la face arrière du paquet.