One might question why GDP in China, where per capita income recently surpassed $7,000, is set to grow so much more slowly than Japan’s did from 1956 to 1970, when the Japanese economy, with per capita income starting from about $7,000, averaged 9.7% annual growth. The answer lies in potential growth.
你也许会问，为何人均收入最近才越过7,000美元的中国，其GDP即将比1956—1970年的日本慢许多。1956—1970年，日本人均收入也在7,000美元左右，但其年增长率平均为9.7%。答案就在于潜在增长率。