Population by country Clio Infra (1500 to 2000).Population by broad age group projected to 2100.Population by age bracket with UN projections.Population and projected growth (total population and under 5).Natural population growth UN (1950 to 2100).History and Future of the World Population by Total Fertility.Global and regional population estimates (US Census Bureau vs.Crude death rate: the share of the population that dies per year.Children per woman vs population growth.Child mortality rate vs population growth.Annual number of deaths by world region.Annual number of births by world region.Absolute increase in global population per year.In the article we show the data and explain why fertility rates declined.ДЄge Structure вЂ“ What is the age profile of populations around the world? How did it change and what will the age structure of populations look like in the future? It comes to an end when the average number of births per woman вЂ“ the fertility rate вЂ“ declines.

Life expectancy, which measures the age of death, has doubled in every region in the world as we show here.Д¬hild & infant mortality вЂ“ Mortality at a young age has a particularly big impact on demographic change.ДЇertility ratesВ вЂ“ Rapid population growth has been a temporary phenomenon in many countries. Life expectancyВ вЂ“ Improving health leads to falling mortality and is therefore the factor that increases the size of the population.

We show how the world population grew over the last several thousand years and we explain what has been driving this change. World population growthВ вЂ“ This article is focusing on the history of population growth up to the present. The world population growth rate declined from 2.2% per year 50 years ago to 1.05% per year. The world population increased from 1 billion in 1800 to 7.7 billion today.

When and why did the world population grow? And how does rapid population growth come to an end? These are the big questions that are central to this research article.

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