What are Population Age Pyramids?
Population pyramids are graphical representations of the age and sex of a population. Due to this reason, it is also referred to as age-sex pyramids.
These graphs are usually shaped like triangles and population pyramids also take other shapes.
Population pyramids usually have males on the left side and females on the right side. There is also a vertical line in the middle of the graph that separates the males from the females.
The total number of literate persons in a given age group is expressed as a percentage of the total population in that age group. Literacy rates continue to rise from one generation to the next.
Yet according to new data from the UNESCO Institute for Statistics, there are still 750 million illiterate adults, two-thirds of whom are women.
These numbers are a stark reminder of the work ahead to meet Sustainable Development Goals (SDGs) 4 and 5 and the Education 2030 targets.
Age – Sex pyramids
There are three types of Age – Sex pyramids: expansive, constrictive, and stationary. Expansive Age – Sex pyramids depict populations that have a larger percentage of people in younger age groups.
Populations with this shape usually have high fertility rates with lower life expectancies. Many third-world countries have expansive age-sex pyramids.
Such a population pyramid is a characteristic of newly developing countries such as Afghanistan, Bangladesh, Kenya, and some countries of Latin America.
Constrictive Age – Sex pyramids are named so because they are constricted at the bottom. There is a lower percentage of younger people.
Constrictive Age – Sex pyramids show declining birth rates since each succeeding age group is getting smaller and smaller. The
The United States has a constrictive Age – Sex pyramid.
Stationary population pyramid
Stationary population pyramids are used to describe the population that is not growing. This pyramid looks like a rectangular shape, as it shows equal percentages across ages.
The stationary oldest-old population is shaped by a constant number of persons annually reaching age 80 and then being subject to constant mortality.
Austria has a stationary population pyramid.
Sex pyramids are those that show a somewhat equal proportion of the population in each age group. There is not a decrease or increase in population; it is stable.
Austria has a stationary Age – Sex pyramid.
The Purpose of the Age – Sex Pyramid The purpose of making this Age – Sex pyramid is to find out the comparison between the number of men and women, the number of workers, and the structure of the population in a country quickly.
In addition, the creation of the Age – Sex Pyramid also has a purpose to assist the government in taking development policies.
Country the loses most Population
Syria’s population is on a decline rate that is far ahead of all other nations.