The question is asked, but the answers are not processed accordingly. Furthermore, often the majority of questions used in the surveys that have been done up until recently—that is changing now; the indicators are changing—have been: what language is most often used at work? What language is used most at home? They do not ask: what languages do you use at home? What languages do you use at work? And in what proportions?
But that has changed. The Government of Quebec's data is far more nuanced with respect to the languages used at work. It provides a more nuanced picture. So, it is possible to arrive at a more nuanced picture from statistics.