据英国国家经济社会研究院智囊团估计，自2004年以来新移民推动产量增长超过1%(自1997年以来大约增长3%)。
The National Institute of Economic and Social Research, a think-tank, estimates that new immigrants have boosted output by more than 1% since 2004 (and by over 3% since 1997).
英国国家经济社会研究院(National Institute of Economic and Social Research)则强调了风险价格的上升——这会增加资本的有效成本，包括股市溢价上升。
The UK National Institute highlights a higher price for risk, which would increase the effective cost of capital, involving a higher equity premium in the stock market.
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