In my lifetime we have gone from "what is a muslim?"[not even going to bother putting 'citation needed' here, it's just testicles] to being 10% of nearly every European country (along with all the associated riots and mass murders that follow islam everywhere like a bad smell[citation needed])
Whole areas of the UK are not recognisable as English anymore[citation needed], and even our elected politicians want us to be less English and act more like muslims[citation needed], even the church of England believes sharia law is inevitable[citation needed].
30% of a population voting one way gets you the political party of your choice and allows you to implement whatever you want, so yeh we are one third of the way there in barely a decade.