"Granted the weight and the specific gravity of a body, we can calculate its volume. "

The proportion has felled down.

Over the last decade the share of GDP going to consumption dropped from 46% to less than 36%.

Some time in the past year or two, for the first time in history, they became a majority of the developing world’s population: their share of the total rose from one-third in 1990 to 49% in 2005.

Global trade in goods and services could rise more than threefold to $27 trillion in 2030, and trade as a share of the global economy will rise from one-quarter today to more than one-third.