SOURCE
CIA World Factbooks 18 December 2003 to 28 March 2011

DEFINITION
National estimates of the percentage of the population lying below the poverty line are based on surveys of sub-groups, with the results weighted by the number of people in each group. Definitions of poverty vary considerably among nations. For example, rich nations generally employ more generous standards of poverty than poor nations.

DEFINITION: National estimates of the percentage of the population lying below the poverty line are based on surveys of sub-groups, with the results weighted by the number of people in each group. Definitions of poverty vary considerably among nations. For example, rich nations generally employ more generous standards of poverty than poor nations.

SOURCE: CIA World Factbooks 18 December 2003 to 28 March 2011 via NationMaster