Other categories that in aggregate rose little reveal, upon closer inspection, more dramatic rises and falls for individual components. For instance, in the category of transportation and communications, "communications equipment" declined by more than half since 2001, from an indexed score of 100 to 47, reflecting the dramatic fall in the cost of cell phones in recent years.
其他並未大幅上漲的類別裡的細項也是有漲有跌，如交通通訊類中的「通訊設備」便大幅下跌，從 2001 年的基數 100 腰斬至目前的 47，反映出同款手機的價格近年確實大幅下降，新型手機的降價速度也很快。