A book entitled Demography describes Taiwan, Singapore, Korea and Japan in these terms: "There are a few countries that recently had a large scale increase in population, but the birth rate has already fallen to below the replacement level, and they are facing dismaying situations."
「人口學」一書形容台灣、新加坡、韓國、日本是「也有些國家晚近曾有人口大幅成長的歷史，生育率都已跌落到替換水準以下，而面臨困惑的局面。」