200 of the world’s largest metropolitan economies: nearly one-half (48 percent) of global output but only 14 percent of world population

From Global MetroMonitor 2011: Volatility, Growth, and Recovery by Emilia Istrate,et al

An analysis of per capita GDP (income) and employment changes in the 2010 to 2011 period for 200 of the world’s largest metropolitan economies, which account for nearly one-half (48 percent) of global output but contain only 14 percent of world population and employment