Where do the world's extreme poor live?

The fight against global poverty is often illustrated in numbers.

In 1990, 36 percent of the world’s population, or around 1.9 billion people, lived in extreme poverty. In 2010, that figure was slashed to slightly under 18 percent, or about 1.2 billion people.

For 2020, the World Bank has set a target of reducing extreme poverty — a condition that the World Bank Group defines as living on less than $1.25 a day — to 9 percent.