拉丁美洲经济委员会：国际比较项目：2021年拉丁美洲和加勒比地区周期-方法论文件和主要结果报告（英文版）

Comparison of economies is essential for public policymaking but considerably hindered by the fact that statistics expressed in local currencies are not directly comparable. Market exchange rates give a distorted view, as they do not reflect the differences in price levels between countries.To overcome this challenge, the International Comparison Program (ICP), coordinated by the World Bank, produces purchasing power parities (PPP). These indicators eliminate price differences, allowing for c