World's richest people under 40 in 2002

Explain that in all graphical displays (bar charts, stacked bar charts and pie charts), the area of ink used for each category is in proportion to its frequency (or relative frequency);

Fortune magazine regularly publishes various lists of the world's biggest corporations and richest individuals, and in September 2002 it published a list of the world's richest people who were under 40. The diagram shows where those with personal fortunes over US$136 billion are based.