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Immigration Raises Productivity, Fuels 28% GDP Gain

6/25/2026

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Story summary
  • Giovanni Peri presented at the Bank Forum in Sintra showing immigration raised GDP per worker.
  • A 1 % rise in immigrant share raised productivity 1.2 % in five years and 1.9 % in ten years.
  • Spain’s 15-percentage-point increase in immigrant adults from 1990-2024 could explain up to a 28 % rise in GDP per worker.
  • In the United Kingdom, a 10-percentage-point rise in immigrant share contributed about 19 % of its 60 % GDP per-person increase.