We couldn't determine what percentage of these people spoke French as their first language.
That said, we had another statistic, which I'm trying to remember. If I recall correctly, of the 2015 graduates, 37% of people whose first language is French studied in French, outside Quebec, while 97% of people whose first language is English studied in English. This shows a major discrepancy. In Quebec, the issue isn't really the same for anglophones.