https://books.google.com/ngrams/graph?content=Einwanderungsgesellschaft_NOUN%2CZuwanderungsgesellschaft_NOUN&year_start=1950&year_end=2019&corpus=de-2019&smoothing=3
Google Ngram Viewer: Einwanderungsgesellschaft_NOUN,Zuwanderungsgesellschaft_NOUN
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