Welfare gains of $156 billion are estimated from a flow equivalent to 3 per cent of developed countries' skilled and unskilled work forces, with most of the gains accruing to developing countries.
估计1 560亿美元的福利收益源自相当于发达国家3％熟练和非熟练劳动力的流动，其中大多数收益由发展中国家享受。