Translate the following English sentence to French:
"I believe that an effort has been made over recent years, but I must insist that it requires special attention now and we must prevent such problems in the future, since it is possible that this problem will become even more acute."
Je pense que l' on a fait un effort ces dernières années, mais j' insiste sur le fait qu' il faudrait maintenant faire particulièrement attention et prévoir l' avenir, car il faut s' attendre à ce que ce problème s' aggrave.