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World population milestones went unnoticed until the ... Long-range predictions to 2055 range from a population decline to 3.2 billion in the 'low scenario', to 'high ...
Graph of world population over the past 12,000 years . As a general rule, the confidence of estimates on historical world population decreases for the more distant past. Robust population data exist only for the last two or three centuries. Until the late 18th century, few governments had ever performed an accurate census.
This is a list of population milestones by country (and year first reached). Only existing countries are included, not former countries. ... This page was last edited ...
Based on this, the UN projected that the world population, 8 billion as of 2023, would peak around the year 2086 at about 10.4 billion, and then start a slow decline, assuming a continuing decrease in the global average fertility rate from 2.5 births per woman during the 2015–2020 period to 1.8 by the year 2100 (the medium-variant projection).
In just one hundred years, the population of Brazil decupled (x10), from about 17 million in 1900, or about 1% of the world population in that year, to about 176 million in 2000, or almost 3% of the global population in the very early 21st century. Mexico's population grew from 13.6 million in 1900 to about 112 million in 2010.
During the 20th century, the growth rate among the European populations fell and was overtaken by a rapid acceleration in the growth rate in other continents, which reached 21 per thousand per year in the last 50 years of the millennium. Between 1900 and 2000, the population of the world increased by 277%, a fourfold increase from 1.5 billion ...
The national 1 July, mid-year population estimates (usually based on past national censuses) supplied in these tables are given in thousands. The retrospective figures use the present-day names and world political division: for example, the table gives data for each of the 15 republics of the former Soviet Union, as if they had already been independent in 1950.
Percentage of population lost Years Location 1 1918 Flu: Influenza A/H1N1: 17–100 million 1–5.4% of global population [4] 1918–1920 Worldwide 2 Plague of Justinian: Bubonic plague 15–100 million 25–60% of European population [5] 541–549 North Africa, Europe, and Western Asia 3 HIV/AIDS pandemic: HIV/AIDS: 44 million (as of 2025) –