For the purpose of comparison of the overall labour productivity among different years, the data on the overall labour productivity of the years prior to 1990 have been adjusted on the basis of 1990 constant prices.

• 为了使各年度的全员劳动生产率数字可以比较，1990年以前各年的全员劳动生产率均指数换算成1990年不变价格。