translate English to French: Over the past 10 years, matters received by the Investigation Division increased by an average of 20 per cent each year, reaching a high of 987 matters received in 2006.  However, the matters received declined by more than 25 per cent in 2007.
Sur les 10 dernières années, le nombre de dossiers reçus par la Division a augmenté en moyenne de 20 % par an, atteignant son plus haut (987 affaires) en 20063 mais pour fléchir de plus de 25 % en 2007.