The World Health Orrganization (WHO) has introduced terms for aging rate shown by a population.
(1) total size of the population
(2) number of people in the population >= 65 years of age
percentage of population >= 65 =
= (number >= 65) / (total population) * 100%
Percentage >= 65 Years
Term for Society
7.01 to 14%
14.01 to 21%
There may be need for another term if the percentage reaches 40 to 50%.
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