Gurley cites China held 33% of global GDP in 1820 before Mao's isolation reduced it dramatically.
“in 1820, China's economy was wide open, and they actually, had 33% of the global economy. 33% of global GDP was China.”
Gurley states China's GDP share fell from 33% to 5% after Mao closed the economy.
“at the end of Mao's reign, and Mao had raised the wall and and kind of turned China inwards, they had fallen to 5% of global GDP.”