Also because they made themselves seem non-threatening to the Christians, got educated, moved to capital cities, got influential jobs, tied up with the Freemasons and business elites and also became influential in the media. Numbers are useless if they are mostly from the disempowered masses. Muslims need to realize that a great way to serve Allah is to follow the path the Jews did (educational, social and economic rising and development, public relations etc), but without compromising the religion or doing anything haram.