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並前往https://www.brookings.edu/blog/future-development/2015/05/20/did-we-get-the-old-age-dependency-of-aging-countries-all-wrong/

Did we get the 'old-age dependency' of aging countries all ...

One particular number to describe this development is the “old-age dependency ratio.” It measures the number of those aged above 65 years ...

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