If we were to go 400 years into the past to Western Europe, which even then, was one of the more literate parts of the planet, you would see that about 15 percent of the population knew how to read.
Si nous étions il y a 400 ans en Europe occidentale, qui, à l'époque, était déjà très lettrée, vous verriez qu'environ 15% de la population savait lire.