The measure that relates the number of dependents (individuals under 15 and over 64) to the number of working-age adults (those aged 15-64) offers valuable insights into a population’s age structure and potential economic strain. It is typically expressed as a ratio, often per 100 working-age individuals. For example, a ratio of 50 indicates that there are 50 dependents for every 100 working-age adults. This tool helps in understanding the proportion of a population reliant on the support of others.
This metric is crucial for policymakers and researchers as it helps predict future demands for social services, healthcare, and education. A high ratio can indicate a substantial burden on the working population to support the young and elderly, potentially impacting economic growth. Historically, changes in fertility rates, mortality rates, and migration patterns have significantly influenced this demographic indicator, leading to both challenges and opportunities for different societies at different times. Understanding these trends is essential for effective resource allocation and planning.