据非洲开发银行政策创新实验室（Policy Innovation Lab）的一项针对八个国家的研究，3%的美元利率将比一些非洲国家在过去五年中进行的商业借贷的边际成本更低。
According to a study of eight countries by the African Development Bank’s Policy Innovation Lab, a 3% interest rate in US dollar terms would be lower than the marginal cost of commercial borrowings undertaken by several African countries over the last five years.