Ok, I answer myself, there are some discrepancies on the graphic with the number of native vs total number of speakers. In some cases they are mixed, and that m

Ok, I answer myself, there are some discrepancies on the graphic with the number of native vs total number of speakers. In some cases they are mixed, and that makes a difference. For example, in [1], the total (L1 + L2) is 490 M. The total for English is 840M, then, not ~500M, which is L2. The primary source is this [2] [1] https://en.wikipedia.org/wiki/List_of_languages_by_total_number_of_speakers https://en.wikipedia.org/wiki/List_of_languages_by_total_num... [2] http://www.ethnologue.com/statistics/size http://www.ethnologue.com/statistics/size