Japan's population is forecast to dwindle to less than 90 million by 2055 and the percentage of elderly (people at least 65 years old) will rise to 40.5 percent, according to median forecasts by the National Institute of Population and Social Security Research.
The proportion of those in the productive age bracket of 15 to 64 will fall to 51.1 percent of the total population, nearly equal to those in the nonproductive age brackets — namely, children up to 14 and the "elderly" (those 65 or older).
As recently as 2005, the elderly accounted for 20.2 percent of the total population while those of productive age, 66.1 percent. This means that one elderly person was supported by two of productive age. In 2055, however, everybody of productive age may have to support one elderly person.
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