Demographic window Totally Explained

Everything about Demographic Window totally explained

Demographic Window is defined to be that period of time in a nation's demographic evolution when the proportion of population of working age group is particularly prominent. Typically, the demographic window of opportunity lasts for 30–40 years depending upon the country. Because of the mechanical link between fertility levels and age structures, the timing and duration of this period is closely associated to those of fertility decline: when birth rates fall, the age pyramid first shrinks with gradually lower proportions of young population (under 15s) and the dependency ratio decreases as is happening (or happened) in various parts of East Asia over several decades. After a few decades, low fertility however causes the population to get older and the growing proportion of elderly people inflates again the dependency ratio as is observed in present-day Europe. The exact technical boundaries of definition may vary. The UN Population Department has defined it as period when the proportion of children and youth under 15 years falls below 30 per cent and the proportion of people 65 years and older is still below 15 per cent. Europe's demographic window lasted from 1950 to 2000. It began in China in 1990 and is expected to last until 2015. India is expected to enter the demographic window in 2010, which may last until the middle of the present century. Much of Africa won't enter the demographic window until 2045 or later.
Societies who have entered the demographic window have smaller dependency ratio (ratio of dependents to working-age population) and therefore the demographic potential for high economic growth as favorable dependency ratios tend to boost savings and investments in human capital. But this so called "demographic bonus" (or demographic dividend) remains only a potential advantage as low participation rates (for instance among women) or rampant unemployment may limit the impact of favorable age structures.
For a list of demographic windows of other nations check the UN link in References.

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