The information is available for official language minorities. Earlier I mentioned the Survey on the Vitality of Official-Language Minorities, which was conducted in 2006, and in which we asked those kinds of questions. Unfortunately, we do not have that information on the entire population for which French is not the first official language spoken. Those types of questions were never put to other people, at least for statistical purposes.
On May 23rd, 2013. See this statement in context.