IN SEPTEMBER 2000 the heads of 147 governments pledged that they would halve the proportion of people on the Earth living in the direst poverty by 2015, using the poverty rate in 1990 as a baseline. It was the first of a litany of worthy aims enshrined in the United Nations “millennium development goals” (MDGs). Many of these aims—such as cutting maternal mortality by three quarters and child mortality by two thirds—have not been met. But the goal of halving poverty has been. Indeed, it was achieved five years early.
In 1990, 43% of the population of developing countries lived in extreme poverty (then defined as subsisting on $1 a day); the absolute number was 1.9 billion people. By 2000 the proportion was down to a third. By 2010 it was 21% (or 1.2 billion; the poverty line was then $1.25, the average of the 15 poorest countries’ own poverty lines in 2005 prices, adjusted for differences in purchasing power). The global poverty rate had been cut in half in 20 years.
That raised an obvious question. If extreme poverty could be halved in the past two decades, why should the other half not be got rid of in the next two? If 21% was possible in 2010, why not 1% in 2030? The Economist