, and economic historians. Frequently used global data come from the Penn World Table (PWT) and the World Bank's World … Development Indicators; a substantial fraction of the world is also covered in the PPP accounts produced by the OECD and the …; version 7.0 of the Penn World Table will soon incorporate these results. The 2005 ICP, like earlier rounds, involved …

used to measure poverty, grows less rapidly than consumption measured in national accounts, in the world as a whole, and in … statistical procedures in poor countries understate the rate of global poverty reduction, and overstate growth in the world …