China's President Hu Jintao

China's President Hu Jintao

Toshiyuki Aizawa/Bloomberg

The size of China’s economy in 2010 was $14.8 trillion, compared with the U.S.’s $14.6 trillion, when accounting for the countries’ differing costs of living, Subramanian wrote in a note published yesterday, a week before President Hu Jintao visits Washington. So-called purchasing power parity calculates gross domestic product using exchange rates that adjusts for