Population ageing is a phenomenon that occurs when the median age rises in a country or region. The reason of it may be rising life expectancy and/or declining birth rates. In Asia and Europe, a significant number of countries will be confronted with population ageing in the near future. The population ageing has a considerable effect on the economy. Older people have more savings than younger people. However, older people spend less on goods. As a result, an ageing population may thus lead to lower interest rates.
人口老齡化（population ageing）是一個國家或地區(qū)年齡中值（median age）上升時出現(xiàn)的現(xiàn)象。其原因可能是人口壽命（life expectancy）的延長和/或出生率的下降。在不久的將來，亞洲和歐洲兩個地區(qū)將有相當數(shù)量的國家面臨人口老齡化問題。人口老齡化對經(jīng)濟造成的影響是相當大的。老年人比年輕人擁有更多的人均積蓄，但老年人在商品消費上花費較少。老齡化人口因此可能導(dǎo)致更低的利率。
