Estimates by the World Bank show about 1.4 billion people living below the international poverty
line of US$ 1.25 a day in 2005, equivalent to more than one fourth of the developing world's population.
Roughly 1 billion people have to live with 1.25 to 2 $ PPP per day and
person (moderate poverty line).
Poverty incidence declined from 52 percent of the global population in 1981 to 42 percent
in 1990 and 25 percent in 2005. That proportion is expected to be 15 percent by 2015. (Poverty brief March 2010, Worldbank)
Most of those extremely poor people live in South Asia, but their
proportion is highest on the African continent where about 45% of the population was
considered to be living in extreme poverty in 2001.