He's been using English,
My apologies on this one. I swear I read English from him somewhere.
There's more English non-native speakers because it's the business language, it doesn't imply knowledge or mastery of such language. Example: I speak n00b French, yet I can say I speak it. Thus, data that is more accurate is native-speaker data.
Wikipedia has its flaws, but for statistics it's usually correct. They're cited.
Davve: As for the you learning English, I don't really know what you mean (again). Are you a native speaker? Either way, you having learnt English naturally or through studies, you can't deny learning languages is hard.
But yes, my apologies for me saying he was speaking English, I was wrong there. Next time I'll post when I'm not so full of coffee.