How many latvians have you met? And how many poles? It's no doubt that almost in every economically advanced country in Europe poles makes the biggest percentage of "ausländers".
That's just about Germany,ok in others might also poles not be in lead,but they're everywhere near top. And I believe half of those turks are even born in Germany...
Not according to Wikipedia. Then again - seeing countries like Germany,UK,France in front of Poland in biggest european population charts,I doubt that people from these countries invade other countries as poles do. Admit it - you're everywhere in large amounts.