Old-age dependency ratio
收藏Organisation for Economic Co-operation and Development2026-04-11 收录
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https://www.oecd.org/en/data/indicators/old-age-dependency-ratio.html
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资源简介：
Old-age dependency ratio is the number of individuals aged 65 or older per 100 people of working age, defined as those aged between 20 to 64 years old.
