China’s stature as the only large economy forecast to grow this year (by 1.9%) stood out in last week’s IMF update, and was then reinforced by its announcement a few days later of 4.9% actual growth in the third quarter.
But buried away in the footnotes to the update was the irony that the country’s overall share of the global economy is actually smaller, according to the IMF’s recalibration of its preferred purchasing power parity (PPP) measurement.
China has gone from being 19.2% of the global economy last year to only 17.4% after the IMF applied new PPP estimates, announced earlier in the year, to the latest outlook. They reflect changing relative prices in China due to its modernisation.
This is not something that is likely to be celebrated in status-conscious Beijing. And the reality is that China remains larger in PPP terms than the US share (15.9% in the new estimates), which it overtook in PPP terms in 2017.
Of course, this is all academic economics if you prefer market exchange rate measurements, where the US remains the clear winner at 24.4% of the world, while China follows at 16.8%. But it is nonetheless interesting, given the IMF/World Bank and US Central Intelligence Agency both tend to use PPP measurements to make their big global comparisons.
India has also been downgraded in share size to 7.1% (from 7.9%), and between them China and India have caused the developing world’s once steady march to being 60% of the world economy about now to be set back at 56.9% last year. And ironically this reweighting of the world economy which increased the relative size for the old rich economies has actually led to a larger economic downturn this year because the slump is worse in the rich economies.
So, the world economy is forecast to contract 5.2% this year, compared with the 4.9% contraction forecast in June because of the recalibration.
Greg Earl