One common statistic is that 75% of jobs created in the last ten years have gone to foreign-born workers. Of course, the term "foreign-born" is one that could be highly misleading.
Let me give some examples where this could get ridiculous from here and abroad:
- Sir Trevor McDonald, the famed newsreader, was born in Trinidad. Does that count as being foreign-born? Trinidad & Tobago is now an independent state, but it was part of the British Empire in 1939.
- One could equally apply this query to most of the members of the "Windrush Generation".
- Amanda Tapping, the Canadian actor best known for her role as Samantha Carter in Stargate SG-1, was actually born in Rochford, Essex, moving to Canada at the age of 3. She could count as a foreign-born worker.
- Genndy Tartakovsky, creator of Dexter's Laboratory, was born in the Soviet Union, going to the USA at the age of 7. He counts as foreign-born despite the fact he would likely remember very little of his time in the USSR.
There's a great article from the Office of National Statistics on this. I would particularly advise people to look at Tables 7 and 8.