Look how Europe corresponds with this map of which countries dub foreign language TV shows and Movies versus which ones use subtitles.
https://www.reddit.com/r/europe/comments/59zyal/map_of_europ...
https://www.reddit.com/r/europe/comments/59zyal/map_of_europ...
Apropos the sampling question: English proficiency is (in my experience) poor outside large German cities.