Middle Class - Recent Growth of The Global Middle Class

Recent Growth of The Global Middle Class

In February 2009, The Economist announced that over half the world's population now belongs to the middle class, as a result of rapid growth in emerging countries. It characterized the middle class as having a reasonable amount of discretionary income, so that they do not live from hand to mouth as the poor do, and defined it as beginning at the point where people have roughly a third of their income left for discretionary spending after paying for basic food and shelter. This allows people to buy consumer goods, improve their health care, and provide for their children's education. Most of the emerging middle class consists of people who are middle-class by the standards of the developing world but not the rich one, since their money incomes do not match developed country levels, but the percentage of it which is discretionary does. By this definition, the number of middle-class people in Asia exceeded that in the West sometime around 2007 or 2008.

The Economist's article pointed out that in many emerging countries the middle class has not grown incrementally, but explosively. The rapid growth results from the fact that the majority of the people fall into the middle of a right-skewed bell-shaped curve, and when the peak of the population curve crosses the threshold into the middle class, the number of people in the middle class grows enormously. In addition, when the curve crosses the threshold, economic forces cause the bulge to become taller as incomes at that level grow faster than incomes in other ranges. The point at which the poor start entering the middle class by the millions is the time when poor countries get the maximum benefit from cheap labour through international trade, before they price themselves out of world markets for cheap goods. It is also a period of rapid urbanization, when subsistence farmers abandon marginal farms to work in factories, resulting in a several-fold increase in their economic productivity before their wages catch up to international levels. That stage was reached in China some time between 1990 and 2005, when the middle class grew from 15% to 62% of the population, and is just being reached in India now.

The Economist predicted that surge across the poverty line should continue for a couple of decades and the global middle class will grow enormously between now and 2030.

As the American middle class is estimated at approximately 45% of the population, The Economist's article would put the size of the American middle class below the world average. This difference is due to the extreme difference in definitions between The Economist's and many other models.

In 2010, a working paper by the OECD estimated that 1.8 billion people were now members of the global middle class.