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total dependency ratio, child and aged dependency ratio
Explanation: Ponieważ mamy "na 100 osób w wieku produkcyjnym przypada 45,2 osób w wieku nieprodukcyjnym", proponuję ściślejsze określenie.
In economics, the dependency ratio is the ratio of the economically dependent part of the population to the productive part. The economically dependent part is recognised to be children who are too young to work, and individuals that are too old, that is, generally, individuals under the age of 15 and over the age of 65. The productive part makes up the gap in between (ages 15 - 64). It is normally expressed as a percentage. (...) The (total) dependency ratio can be partitioned into the child dependency ratio and the aged dependency ratio. http://tinyurl.com/265re5