How to measure China’s true economic growth

When Li Keqiang, China’s prime minister, gave his final speech at the National People’s Congress on March 5th, it was already clear who would succeed him. But a successor has yet to be found for the “Li Keqiang index”. This unofficial proxy for China’s economic growth was inspired by a leaked conversation between Mr Li, when he was party secretary for the province of Liaoning, and an American diplomat. Mr Li confessed that the province’s gdp figures were “unreliable”. Instead, he focused on electricity consumption, rail cargo and bank lending. Taking our cue from Mr Li, this newspaper thought it would be fun to see what the three indicators, bundled into a single index, revealed about China’s economy at a national level.

The index has had a good run since its introduction in 2010. A version has its own “ticker” on Bloomberg. It inspired a similar index for India. Teams of researchers at the Federal Reserve Bank of San Francisco and separately at the New York Fed have tested the usefulness of Mr Li’s preferred indicators. A paper published in 2017 by Hunter Clark and Maxim Pinkovskiy of the New York Fed, together with Xavier Sala-i-Martin of Columbia University, calculated that the best combination of the three indicators gave roughly 60% weight to loans, 30% to electricity and 10% to rail cargo. In a subsequent paper, Mr Clark, Mr Pinkovskiy and Jeff Dawson of the New York Fed suggested replacing lending with m2, a measure of the money supply, because bank-credit figures failed to capture a government crackdown on shadow lending.