In order to cut income poverty by half by 2015, there should have been a compound rate of decline of 2.7 per cent a year between 1990 and 1998; instead, the rate was 1.7 per cent.
为了在2015年以前把收入贫穷人数减少一半，在1990-1998年期间每年下降的复合率应当是2.7％；相反，这一比率是1.7％。