GDP Revisions and Updating Statistical Systems in Sub-Saharan Africa: Reports from the Statistical Offices in Nigeria, Liberia and Zimbabwe
报告了尼日利亚、利比里亚和津巴布韦统计局当前GDP估算的基年、数据和方法分别来自1990、1992和1994年，并指出更新统计系统成本高、耗时长，利比里亚的权威估算尚未成功。
The quality of economic statistics in Africa has been likened to a statistical tragedy. Currently many statistical systems in Africa are being updated. This report from the statistical offices in Nigeria, Liberia and Zimbabwe documents that base year, data and methods used to generate GDP estimates currently date from 1990, 1992 and 1994. There is a growing need for macroeconomic statistics, but a rebasing of GDP estimates is costly and time consuming. The work to update economic statistics in Nigeria and Zimbabwe is still ongoing, while efforts to generate an authoritative estimate of the Liberian economy have proved unsuccessful.