A significant increase of about 30 per cent was observed in the National Committees' retention applied to cards and gifts over the last three years, a figure that did not correspond to a comparable growth in gross proceeds.
国家委员会过去三年来保留贺卡和礼品方面出现约30％的大幅度增加，这一数字与总收益方面的可比较增长并不相称。