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United Nations . Now in 2019, there are 7.7 billion. The age groups of populations will shift significantly as well — namely, a greater percentage of people older than 65 (2.37 billion people), compared to … facts.Everything you need to know about the industry developmentKey economic and social indicatorsReligious diversity in Middle East/North Africa in 2010, by religionAccording to the source the data from the above statistic originates from official statistical yearbooks and bulletins of the particular country. From now on is not a widening of the base, but a ‘fill up’ of the population above the base: the number of children will barely increase and then start to decline, but the number of people of working age and old age will increase very substantially. You see that in each subsequent decade the population pyramid was fatter than before – in each decade more people of all ages were added to the world population.If you look at the green pyramid for 2018 you see that the narrowing above the base is much less strong than back in 1950; the child mortality rate fell from 1-in-5 in 1950 to fewer than 1-in-20 today.Countries across the world have been going through an important demographic transition: from young to increasingly ageing populations.Whilst the total age dependency ratio is a useful indicator, understanding the breakdown of this dependency between young and old is key. In the two charts we see the breakdown of two example populations – Japan and Nigeria – by age between young (under 15 years old), working-age (15-64 years old) and elderly (65+ years old). In the United States, under-5s were already outnumbered by those older than 64 by 1966. Today, there are 703 million people aged 65 or older, a number that is projected to reach 1.5 billion by 2050. But the split between young and old populations varies also significantly across the world.The opposite is true in Nigeria. Since then it has fallen to 50%, and is expected to fall until the mid-2040s.But how is this expected to change in the future? This has not always been the case as the chart shows. How did it change over time and what can we expect for the future? Population development Globally, about 26 percent of the world is …
A higher number means there are more ‘dependents’ relative to the working-age population; a lower number means fewer.It is common in demography to split the population into three broad age groups:Median age provides an important single indicator of the age distribution of a population. New York, 2020 .
It provides the age ‘midpoint’ of a population; there are the same number of people who are older than the median age as there are younger than it.Overall we see that higher-income countries, across North America, Europe and East Asia tend to have a higher median age.For Japan, and other high-income countries, it’s expected that the older demographic over 65 years old will continue to increase in the coming decades.
The Department of Economic and Social Affairs of the United Nations Secretariat is a vital interface between These are the question that this entry focuses on.It’s given as the number of dependents per 100 people of working-age.
From an economic perspective, the changing age structure generates very different opportunities and challenges across the spectrum of countries.In these two charts we see the breakdown of age dependency by young and old populations for two contrasting countries: Japan and Nigeria.Through shades of blue and green the same visualization shows the population structure over the last decades up to 2018. Moreover, publications of the United Nations, the Department of Economic and Social Affairs (Population Division) of the UN and the U.S. Census Bureau serve as data sources. The width represents the size of the population of a given age; women on the right and men to the left. These again show the age dependency ratio, but are now split between young (under 15 years) and old (65+ years) dependency ratios.Going beyond the global perspective, when did this crossover point occur in countries around the world?Data source: United Nations — World Population Prospects 2017In the map above we considered the ‘dependent’ population – both young and old – as a single group. When citing this entry, please also cite the underlying data sources. But maximising this potential needs a strong policy environment for education, health and job creation. The youngest was Niger at 14.9 years.Over the past century, the age structure of populations has been changing dramatically.We are at a turning point in global population history. Japan has aged significantly in recent decades: in 1960 the young outnumbered the old by nearly 5-to-1.In these two charts you can compare the population structure by broad age groups for two example countries: Japan and Nigeria. The bottom layer represents the number of newborns and above it you find the numbers of older cohorts. The majority of countries have a ‘dependent’ population that is 50-60% the size of its working-age population.