Contrary to popular wisdom, China’s rapid growth is not hugely dependent on exports

MOST people suppose that China’s economic success depends on exporting cheap goods to the rich world. If so, its growth would be seriously dented by a stuttering American economy. Headline figures show that China’s exports surged from 20% of GDP in 2001 to almost 40% in 2007, which seems to suggest not only that exports are the main driver of growth, but also that China’s economy would be hit much harder by an American downturn than it was during the previous recession in 2001. If exports are measured correctly, however, they account for a surprisingly modest share of China’s economic growth.

The headline ratio of exports to GDP is very misleading. It compares apples and oranges: exports are measured as gross revenue while GDP is measured in value-added terms. Jonathan Anderson, an economist at UBS, a bank, has tried to estimate exports in value-added terms by stripping out imported components, and then converting the remaining domestic content into value-added terms by subtracting inputs purchased from other domestic sectors. At first glance, that second step seems odd: surely the materials which exporters buy from the rest of the economy should be included in any assessment of the importance of exports? But if purchases of domestic inputs were left in for exporters, the same thing would need to be done for all other sectors. That would make the denominator for the export ratio much bigger than GDP.

(Via China’s economy.)